US3786810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Placement apparatus for positioning an elongated element in a body lument
Assignee: LEVOY Inc S
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Filing: 1971-03-22
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Granted: 1974-01-22
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Expires: 1991-03-22
Abstract
Abstract A placement apparatus or unit for positioning an elongated element in a body lumen, and a method of using the same. The elongated element may be a catheter, piezoelectric transducer means carried in a catheter, a coaxial cable, or other sensing means, which may or may not have a lumen therethrough, but which may be connected to apparatus for indicating or recording central arterial pulse wave-forms and other heart actions. The element is encased in a sheath to which the proximal end of the element is removably connected, and the element is advanced relatively to a needle into a body lumen by pulling or pushing the sheath through an opening in the needle hub. The method involves monitoring venous or arterial pressure from the point of entry into a body lumen to the thoracic cavity at or adjacent the heart.
Inventors
- 👤 K Pannier
- 👤 G Reynolds
- 👤 J Sorenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:13
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/013; A61B; A61B5/00; A61B5/02; A61M25/06; A61M25/0662; A61M25/0668; A61M1/00; A61M1/14; A61M1/28; A61M1/285; A61M2205/00; A61M2205/33; A61M2205/3331; A61M2205/3348
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
163 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the element is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element during advancement of the sheath to effect advancement of the element into a body lumen relatively to said needle and disrupt means by pulling said sheath in generally the advancing direction of the element, regardless of length and flexibility of the sheath and element, said disrupt means remaining spaced from the hub in a final position of the hub relative to the disrupt means so that continued pull in the same direction will effect removal of the sheath from the hub.
Claim 2
Dependent Claim
163 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the element is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element during advancement of the sheath to effect advancement of the element into a body lumen relatively to said needle and disrupt means by pulling said sheath in generally the advancing direction of the element, regardless of length and flexibility of the sheath and element, said disrupt means remaining spaced from the hub in a final position of the hub relative to the disrupt means so that continued pull in the same direction will effect removal of the sheath from the hub.
Claim 3
Dependent Claim
12 words
The placement unit of claim 1, wherein said element is a catheter.
Claim 4
Dependent Claim
29 words
The placement unit of claim 1, including means associated with said needle to automatically release the connection between said sheath and the hollow hub after the element is advanced.
Claim 5
Dependent Claim
43 words
The placement unit of claim 1, including a hollow hub secured around the outer portion of said needle, said needle hub having a slot therein through which the free end of said sheath extends and the sheath is withdrawn as the element advances.
Claim 6
Dependent Claim
23 words
The placement unit of claim 4, including interlocking means carried by said hubs for coupling the hubs together after advancement of the element.
Claim 7
Dependent Claim
30 words
The placement unit of claim 5, including means carried by one of said hubs to automatically release the connection between the sheath and element hub when the hubs are coupled.
Claim 8
Dependent Claim
30 words
The placement unit of claim 4, including means carried by the needle hub to prevent retraction of the element relatively to the needle after advancement of the element has started.
Claim 9
Dependent Claim
46 words
The placement unit of claim 1, including a hub on said needle, one of said hubs having a recess therein, an annular shoulder in said recess, and resilient fingers on the other said hub having means thereon to enter said recess and latch behind said shoulder.
Claim 10
Dependent Claim
167 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the eLement is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element, whereby said element can be advanced into a body lumen relatively to said needle by moving said sheath adjacent the free end thereof, regardless of the length and flexibility of the sheath and element, said hub including a nipple, said sheath being telescoped over said nipple, a washer holding said sheath secured to said nipple when tilted and releasing said sheath when disposed normal to the axis of the element, and means in said hub to retain said washer tilted during advancement of the element.
Claim 11
Dependent Claim
167 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the eLement is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element, whereby said element can be advanced into a body lumen relatively to said needle by moving said sheath adjacent the free end thereof, regardless of the length and flexibility of the sheath and element, said hub including a nipple, said sheath being telescoped over said nipple, a washer holding said sheath secured to said nipple when tilted and releasing said sheath when disposed normal to the axis of the element, and means in said hub to retain said washer tilted during advancement of the element.
Claim 12
Dependent Claim
185 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the element is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element, whereby said element can be advanced into a body lumen relatively to said needle by moving said sheath adjacent the free end thereof, regardless of the length and flexibility of the sheath and element. a floating taper in said element hub over which said sheath is disposed and said taper diminishing in the direction of extension of the sheath therefrom, and a sleeve in said element hub carrying interlocking means and said sheath being gripped between said taper and the inner edge of said sleeve until the taper is pushed back by the blunt end of said needle when said hubs are coupled.
Claim 13
Dependent Claim
185 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the element is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element, whereby said element can be advanced into a body lumen relatively to said needle by moving said sheath adjacent the free end thereof, regardless of the length and flexibility of the sheath and element. a floating taper in said element hub over which said sheath is disposed and said taper diminishing in the direction of extension of the sheath therefrom, and a sleeve in said element hub carrying interlocking means and said sheath being gripped between said taper and the inner edge of said sleeve until the taper is pushed back by the blunt end of said needle when said hubs are coupled.
Claim 14
Dependent Claim
194 words
In combination in a placement unit including an elongated element to be positioned in a body lumen: a hollow hub; said element having an end portion thereof secured in said hub; a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free; means adjacent the free end of said sheath to disrupt the same; said means remaining outside of the body lumen and providing a handhold relative to which the element and sheath can be advanced; whereby said element may be advanced through a previously established cannulated entry into the body of a patient by moving the free end portion of said sheath in generally the advancing direction of the element and divergently relative to the element so that the advancing sheath remains outside the body lumen as the sheath progressively disrupts and diverts from the element while advancing the element in the lumen; said disrupt means remaining spaced from the hub in a final position of the hub relative to the disrupt means so that continued pulling in the same direction will effect removal of the sheath from the hub.
Claim 15
Dependent Claim
194 words
In combination in a placement unit including an elongated element to be positioned in a body lumen: a hollow hub; said element having an end portion thereof secured in said hub; a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free; means adjacent the free end of said sheath to disrupt the same; said means remaining outside of the body lumen and providing a handhold relative to which the element and sheath can be advanced; whereby said element may be advanced through a previously established cannulated entry into the body of a patient by moving the free end portion of said sheath in generally the advancing direction of the element and divergently relative to the element so that the advancing sheath remains outside the body lumen as the sheath progressively disrupts and diverts from the element while advancing the element in the lumen; said disrupt means remaining spaced from the hub in a final position of the hub relative to the disrupt means so that continued pulling in the same direction will effect removal of the sheath from the hub.
Claim 16
Dependent Claim
44 words
The unit of claim 11, wherein said disrupt means comprise a second hollow hub having a side opening through which the free end of said sheath projects, said element being advanced axially through said second hub as the sheath is forced through said opening.
Claim 17
Dependent Claim
32 words
The unit of claim 12, including cooperative means carried by said hubs for interlocking said hubs together after advancement of the element and releasing the connection between said sheath and element hub.
Claim 18
Dependent Claim
35 words
The unit of claim 12, including a rigid tubular member disposed axially in said second hub through which the element is advanced and which is positioned to disrupt said sheath as the same is withdrawn.
Claim 19
Dependent Claim
153 words
A placement unit for positioning an elongated element in a body lumen: including a hollow hub; an element having a portion thereof secured in said hub; a protective disruptible sheath around said element and removably connected at one end to said hub; the other end of said sheath being free; means adjacent the free end of said sheath to disrupt the same; whereby said element may be advanced through a previously established cannulated entry into the body of a patient by moving the free portion of said sheath; a nipple in said hub; a floating washer around said nipple; said sheath having its end portion disposed over said nipple and through said washer, and a stop member in said hub disposed to contact said washer at a point adjacent the circumference thereof and tilt the washer to exert a gripping action on the sheath when an advancing movement is exerted on said sheath.
Claim 20
Dependent Claim
153 words
A placement unit for positioning an elongated element in a body lumen: including a hollow hub; an element having a portion thereof secured in said hub; a protective disruptible sheath around said element and removably connected at one end to said hub; the other end of said sheath being free; means adjacent the free end of said sheath to disrupt the same; whereby said element may be advanced through a previously established cannulated entry into the body of a patient by moving the free portion of said sheath; a nipple in said hub; a floating washer around said nipple; said sheath having its end portion disposed over said nipple and through said washer, and a stop member in said hub disposed to contact said washer at a point adjacent the circumference thereof and tilt the washer to exert a gripping action on the sheath when an advancing movement is exerted on said sheath.
Claim 21
Dependent Claim
59 words
The unit of claim 15, including a second hub through which the element is advanced and out of which the sheath is withdrawn, interengaging means carried by said hubs, and means carried by said second hub to abut said washer and move it to a position normal to said nipple and release said sheath when said hubs are engaged.
Claim 22
Dependent Claim
161 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the element is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element, whereby said element can be advanced into a body lumen relatively to said needle by moving said sheath adjacent the free end thereof, regardless of the length and flexibility of the sheath and element, a nipple in said hub, an elastic sleeve holding the end of said sheath on said nipple, said disrupt means comprising a hub on said needle, and means carried by said needle hub to push said sleeve off said sheath after the catheter is advanced.
Claim 23
Dependent Claim
161 words
A placement unit embodying a needle and an elongated element telescopically associated therewith for positioning the element in a body lumen, wherein the improvement comprises: a hollow hub in which a portion of the element is secured, and a protective disruptible sheath around said element and removably connected at one end to said hub, the other end of said sheath being free and disposed adjacent said needle, means associated with said needle to disrupt said sheath for removal from around said element, whereby said element can be advanced into a body lumen relatively to said needle by moving said sheath adjacent the free end thereof, regardless of the length and flexibility of the sheath and element, a nipple in said hub, an elastic sleeve holding the end of said sheath on said nipple, said disrupt means comprising a hub on said needle, and means carried by said needle hub to push said sleeve off said sheath after the catheter is advanced.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |