US5279564A — Cannula retention device

Claim 1

Independent Claim 106 words

A fixation apparatus to hold an object to an opening in a body wall, comprising: an elongated tube defined by an inner and outer surface and having a proximal end and a distal end; at least one gripping member formed to store a force when in a restrained position, attached to the outer surface of said tube; a sleeve slidably mounted over said tube, wherein said gripping member is restrained when said sleeve is in a first position and said gripping member is unrestrained when said sleeve is in a second position, releasing said stored force, allowing said gripping member to move toward the body wall.

Claim 2

Dependent Claim 106 words

A fixation apparatus to hold an object to an opening in a body wall, comprising: an elongated tube defined by an inner and outer surface and having a proximal end and a distal end; at least one gripping member formed to store a force when in a restrained position, attached to the outer surface of said tube; a sleeve slidably mounted over said tube, wherein said gripping member is restrained when said sleeve is in a first position and said gripping member is unrestrained when said sleeve is in a second position, releasing said stored force, allowing said gripping member to move toward the body wall.

Claim 3

Dependent Claim 19 words

The apparatus of claim 1, wherein said gripping member expands outwardly from said tube when unrestrained by said sleeve.

Claim 4

Dependent Claim 21 words

The apparatus of claim 2, wherein said gripping member applies a compressive force to the inner body wall around the opening.

Claim 5

Dependent Claim 35 words

The apparatus of claim 3, further comprising: pad means mounted on said member for distributing the compressive force to the body wall exerted by said gripping member when said sleeve is in said second position.

Claim 6

Dependent Claim 19 words

The apparatus of claim 1, wherein said sleeve extends through the opening to reduce damage to the body tissue.

Claim 7

Dependent Claim 16 words

The apparatus of claim 1, wherein said tube is further defined by at least one slot.

Claim 8

Dependent Claim 28 words

The apparatus of claim 6, wherein said at least one gripping member is at least partially inset in said slot when said sleeve is in said first position.

Claim 9

Dependent Claim 134 words

A fixation apparatus to hold an object to a body opening, said body opening having an inner and outer body wall, comprising: an elongated tube defined by an inner and outer surface and having a proximal end and a distal end, wherein said tube has at least one slot; at least one outwardly biased member attached to the outer surface of said tube, wherein said member selectively applies a force to the body wall; a sleeve slidably mounted over said tube, wherein said at least one member is restrained at least in part in said slot and against said outward bias when said sleeve is in a first position and said member is unrestrained, allowing said outward bias to move said member toward a body wall when said sleeve is in a second position.

Claim 10

Dependent Claim 134 words

A fixation apparatus to hold an object to a body opening, said body opening having an inner and outer body wall, comprising: an elongated tube defined by an inner and outer surface and having a proximal end and a distal end, wherein said tube has at least one slot; at least one outwardly biased member attached to the outer surface of said tube, wherein said member selectively applies a force to the body wall; a sleeve slidably mounted over said tube, wherein said at least one member is restrained at least in part in said slot and against said outward bias when said sleeve is in a first position and said member is unrestrained, allowing said outward bias to move said member toward a body wall when said sleeve is in a second position.

Claim 11

Dependent Claim 57 words

The apparatus of claim 8, further comprising: means mounted on said tube to facilitate positioning of said sleeve on said tube; and means for capturing the outer body wall, movably mounted on said sleeve, wherein said means can be positioned on said sleeve to apply an inward force to the body wall in opposition to said member.

Claim 12

Dependent Claim 33 words

The apparatus of claim 8, further comprising pad means mounted on said member for distributing said force to the body wall exerted by said member when said sleeve is in said second position.

Claim 13

Dependent Claim 23 words

The apparatus of claim 10, wherein said pad means is substantially flush with said sleeve when said sleeve is in said first position.

Claim 14

Dependent Claim 19 words

The apparatus of claim 8, wherein said sleeve extends through the opening to reduce damage to the body tissue.

Claim 15

Independent Claim 69 words

A method for securing an object to an opening in a body wall, comprising the steps of: restraining at least one member against a tube in a manner where the restraint causes potential energy to be stored in the member; inserting the tube into the opening; and releasing said member to allow the potential energy in said member to be converted to kinetic energy to expand the member outwardly.

Claim 16

Independent Claim 69 words

A method for securing an object to an opening in a body wall, comprising the steps of: restraining at least one member against a tube in a manner where the restraint causes potential energy to be stored in the member; inserting the tube into the opening; and releasing said member to allow the potential energy in said member to be converted to kinetic energy to expand the member outwardly.

Claim 17

Dependent Claim 23 words

The method of claim 13, wherein the step of restraining is accomplished by: positioning a sleeve adjacent the member; and uncoiling the member.

Claim 18

Dependent Claim 49 words

The method of claim 14, wherein the step of releasing is accomplished by: sliding said sleeve along said tube to a position adjacent the proximal end of said tube; and allowing the member to coil into contact with the body wall to apply a load to the body wall.

Claim 19

Dependent Claim 23 words

The method of claim 13, further comprising the step of applying an inward compressive force to the outer body wall around said opening.

Claim 20

Dependent Claim 31 words

The method of claim 16, wherein the step of applying an inward compressive force is accomplished by moving a stop along said sleeve to a position adjacent the outer body wall.

Claim 21

Dependent Claim 21 words

The method of claim 15, wherein the step of allowing is further accomplished by distributing the load applied by the member.

Claim 22

Dependent Claim 98 words

A fixation apparatus to hold an object to an opening in a body wall, comprising: an elongated tube defined by an inner and an outer surface and having a proximal end and a distal end; at least one member to selectively apply a force to the body wall, attached to said tube; and said member further comprising pad means for distributing said force to the body wall, operable in at least two positions, wherein said pad means is substantially flush with said tube in a first position and said pad means selectively expands outwardly in a second position.

Claim 23

Dependent Claim 98 words

A fixation apparatus to hold an object to an opening in a body wall, comprising: an elongated tube defined by an inner and an outer surface and having a proximal end and a distal end; at least one member to selectively apply a force to the body wall, attached to said tube; and said member further comprising pad means for distributing said force to the body wall, operable in at least two positions, wherein said pad means is substantially flush with said tube in a first position and said pad means selectively expands outwardly in a second position.

Claim 24

Dependent Claim 60 words

The apparatus of claim 19, wherein said member further comprises: said member shaped to store a force, wherein said element is outwardly biased due to its shape; a sleeve slidably mounted over said tube, wherein said member is restrained when said sleeve is in a first position and said member is unrestrained when said sleeve is in a second position.

Claim 25

Dependent Claim 18 words

The apparatus of claim 19, wherein said member expands outwardly from said tube when unrestrained by said sleeve.

Claim 26

Dependent Claim 29 words

The apparatus of claim 19, wherein: said tube has at least one slot; and said member mounted at least in part in said slot when restrained by said sleeve.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1997-01-17	1997-07-19	1998-01-18	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2001-01-17	2001-07-19	2002-01-18	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2005-01-17	2005-07-19	2006-01-18	$7700.00	Window Closed / Lapsed

Cannula retention device

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