US3798680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal wrist system
Assignee: Professional Medical Products Inc
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Filing: 1972-04-05
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Granted: 1974-03-26
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Expires: 1992-04-05
Abstract
Abstract A universal wrist system in which terminals with different types of shafts and different types of mountings may be used. A wrist forearm connector member is adapted to be molded into a prosthetic forearm. The wrist forearm connector member has a passage therethrough and a substantially flat ring-shaped mounting surface positioned at one end of the passage and extending around the opening into the passage. At least one opening is provided into the surface of the forearm connector member. A removable terminal mounting unit has a boss, an elongated receptable extending into the boss, an opening for receiving the shaft of a terminal device and a connector to secure the shaft of the terminal device in the receptacle. A ring-shaped surface surrounds the boss and is adapted for mounting in abuttment with the wrist forearm connector face with the boss extending into the passage of the wrist forearm connector member. At least one opening is provided in the surface of the removable terminal mounting unit. A locking member is removably extendable between the openings of both of the surfaces for rigidly securing the surfaces of the wrist forearm connector and the terminal mounting unit together.
Inventors
- 👤 W Prout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/54; A61F2/58; A61F2/583; A61F2/585; A61F2/588
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
263 words
A universal prosthetic wrist system for connecting the forearm of an amputee to the shaft of a prosthetic terminal device through different types of terminal mountings, the combination comprising: a. a tubular-shaped wrist forearm connector comprising a member having front and back ends and adapted to be molded into a prosthetic forearm, the member comprising: 2. a first circular passage extending therethrough from the front end to the back end having a first ring-shaped side surface; 2. an annular groove around the perimeter of said connector and positioned towards the front end thereof into which a forearm may be molded; 3. a ring-shaped collar portion extending from the groove to the end of the passage at said front end and having, at its front end, a substantially flat, ring-shaped front mounting surface extending around said passage, the inner portion of said ring-shaped collar portion being stepped inwardly into said passage with respect to other portions of said passage and forming said first side surface; and 4. at least one opening into said front mounting surface; b. a removable terminal mounting unit having front and back ends and an outer perimeter in between the ends comprising: 1. a disk-shaped portion having a front end and a boss extending in the opposite direction from a back end of the removable terminal mounting unit, the boss comprising a second ring-shaped side surface in abutting engagement with said first side surface; 2. an elongated receptacle in the boss and opening out of the front end of the disk-shaped portion for receiving the shaft of a terminal device;
Claim 2
Dependent Claim
263 words
A universal prosthetic wrist system for connecting the forearm of an amputee to the shaft of a prosthetic terminal device through different types of terminal mountings, the combination comprising: a. a tubular-shaped wrist forearm connector comprising a member having front and back ends and adapted to be molded into a prosthetic forearm, the member comprising: 2. a first circular passage extending therethrough from the front end to the back end having a first ring-shaped side surface; 2. an annular groove around the perimeter of said connector and positioned towards the front end thereof into which a forearm may be molded; 3. a ring-shaped collar portion extending from the groove to the end of the passage at said front end and having, at its front end, a substantially flat, ring-shaped front mounting surface extending around said passage, the inner portion of said ring-shaped collar portion being stepped inwardly into said passage with respect to other portions of said passage and forming said first side surface; and 4. at least one opening into said front mounting surface; b. a removable terminal mounting unit having front and back ends and an outer perimeter in between the ends comprising: 1. a disk-shaped portion having a front end and a boss extending in the opposite direction from a back end of the removable terminal mounting unit, the boss comprising a second ring-shaped side surface in abutting engagement with said first side surface; 2. an elongated receptacle in the boss and opening out of the front end of the disk-shaped portion for receiving the shaft of a terminal device;
Claim 3
Dependent Claim
23 words
an annular groove around the perimeter of said connector and positioned towards the front end thereof into which a forearm may be molded;
Claim 4
Dependent Claim
23 words
an annular groove around the perimeter of said connector and positioned towards the front end thereof into which a forearm may be molded;
Claim 5
Dependent Claim
20 words
a first circular passage extending therethrough from the front end to the back end having a first ring-shaped side surface;
Claim 6
Dependent Claim
20 words
a first circular passage extending therethrough from the front end to the back end having a first ring-shaped side surface;
Claim 7
Dependent Claim
33 words
A universal prosthetic wrist system according to claim 1 wherein said wrist forearm connector and removable terminal mounting unit have outer structural configurations around the respective ring-shaped surfaces of substantially the same perimeter.
Claim 8
Dependent Claim
25 words
an elongated receptacle in the boss and opening out of the front end of the disk-shaped portion for receiving the shaft of a terminal device;
Claim 9
Dependent Claim
25 words
an elongated receptacle in the boss and opening out of the front end of the disk-shaped portion for receiving the shaft of a terminal device;
Claim 10
Dependent Claim
14 words
A connector for securing the shaft of the tErminal device in said elongated receptacle;
Claim 11
Dependent Claim
14 words
A connector for securing the shaft of the tErminal device in said elongated receptacle;
Claim 12
Dependent Claim
49 words
A universal prosthetic wrist system according to claim 1 wherein said boss of said removable terminal mounting unit comprises a further ring-shaped side surface inwardly stepped from the second side surface so as to be spaced away from the side of the first circular passage of said forearm connector.
Claim 13
Dependent Claim
157 words
A connector for securing the shaft of the tErminal device in said elongated receptacle; 4. a back flat annular-shaped mounting surface on the diskshaped portion towards the back end of said terminal mounting unit surrounding said boss and in abutment with the wrist forearm connector member front mounting surface with said boss extending into the passage of said wrist forearm connector member; and 5. at least one opening in said back mounting surface alignable with the opening in said front mounting surface; c. the forearm connector comprising a construction adjacent the front mounting surface thereof, allowing unobstructed access to such front mounting surface for the outer perimeter of said removable mounting unit as the latter is mounted and removed from such front mounting surface; and d. a locking member removably extending between the openings in both said front and back mounting surfaces for rigidly securing such surfaces of the wrist forearm connector and terminal mounting unit together.
Claim 14
Dependent Claim
157 words
A connector for securing the shaft of the tErminal device in said elongated receptacle; 4. a back flat annular-shaped mounting surface on the diskshaped portion towards the back end of said terminal mounting unit surrounding said boss and in abutment with the wrist forearm connector member front mounting surface with said boss extending into the passage of said wrist forearm connector member; and 5. at least one opening in said back mounting surface alignable with the opening in said front mounting surface; c. the forearm connector comprising a construction adjacent the front mounting surface thereof, allowing unobstructed access to such front mounting surface for the outer perimeter of said removable mounting unit as the latter is mounted and removed from such front mounting surface; and d. a locking member removably extending between the openings in both said front and back mounting surfaces for rigidly securing such surfaces of the wrist forearm connector and terminal mounting unit together.
Claim 15
Dependent Claim
64 words
a ring-shaped collar portion extending from the groove to the end of the passage at said front end and having, at its front end, a substantially flat, ring-shaped front mounting surface extending around said passage, the inner portion of said ring-shaped collar portion being stepped inwardly into said passage with respect to other portions of said passage and forming said first side surface; and
Claim 16
Dependent Claim
64 words
a ring-shaped collar portion extending from the groove to the end of the passage at said front end and having, at its front end, a substantially flat, ring-shaped front mounting surface extending around said passage, the inner portion of said ring-shaped collar portion being stepped inwardly into said passage with respect to other portions of said passage and forming said first side surface; and
Claim 17
Dependent Claim
95 words
A universal prosthetic wrist system according to claim 1 wherein said removable terminal mounting unit comprises a front facing surface facing in substantially the opposite direction from the back mounting surface thereof, the opening to the back mounting surface of the removable terminal mounting member extending from the back mounting surface to the front facing surface, the locking member comprising a shoulder engaging the front facing surface and a threaded portion threaded into the opening in the front mounting surface of the wrist forearm connector to thereby secure the front and back mounting surfaces together.
Claim 18
Dependent Claim
48 words
a back flat annular-shaped mounting surface on the disk-shaped portion towards the back end of said terminal mounting unit surrounding said boss and in abutment with the wrist forearm connector member front mounting surface with said boss extending into the passage of said wrist forearm connector member; and
Claim 19
Dependent Claim
48 words
a back flat annular-shaped mounting surface on the disk-shaped portion towards the back end of said terminal mounting unit surrounding said boss and in abutment with the wrist forearm connector member front mounting surface with said boss extending into the passage of said wrist forearm connector member; and
Claim 20
Dependent Claim
29 words
at least one opening into said front mounting surface; b. a removable terminal mounting unit having front and back ends and an outer perimeter in between the ends comprising:
Claim 21
Dependent Claim
29 words
at least one opening into said front mounting surface; b. a removable terminal mounting unit having front and back ends and an outer perimeter in between the ends comprising:
Claim 22
Dependent Claim
93 words
at least one opening in said back mounting surface alignable with the opening in said front mounting surface; c. the forearm connector comprising a construction adjacent the front mounting surface thereof, allowing unobstructed access to such front mounting surface for the outer perimeter of said removable mounting unit as the latter is mounted and removed from such front mounting surface; and d. a locking member removably extending between the openings in both said front and back mounting surfaces for rigidly securing such surfaces of the wrist forearm connector and terminal mounting unit together.
Claim 23
Dependent Claim
93 words
at least one opening in said back mounting surface alignable with the opening in said front mounting surface; c. the forearm connector comprising a construction adjacent the front mounting surface thereof, allowing unobstructed access to such front mounting surface for the outer perimeter of said removable mounting unit as the latter is mounted and removed from such front mounting surface; and d. a locking member removably extending between the openings in both said front and back mounting surfaces for rigidly securing such surfaces of the wrist forearm connector and terminal mounting unit together.
Claim 24
Dependent Claim
35 words
A universal prosthetic wrist system according to claim 1 wherein the connector in the receptacle of the removable terminal mounting unit comprises threads in the receptacle for receiving a threaded shaft on a terminal device.
Claim 25
Dependent Claim
76 words
A universal prosthetic wrist system according to claim 1 wherein the removable terminal mounting unit comprises a ring-shaped cavity area around said elongated receptacle having a bottom structure and a second connector part comprising a first ring-shaped resilient member for engaging the bottom structure of said cavity and a second ring-shaped member covering said resilient material against which a terminal device may bear, said receptacle comprising threads for receiving a threaded shaft on a terminal device.
Claim 26
Dependent Claim
36 words
A universal prosthetic wrist system according to claim 1 wherein the connector in the receptacle of the removable terminal mounting unit comprises a member movable in the elongated receptacle in a transverse direction to the receptacle.
Claim 27
Dependent Claim
37 words
A universal prosthetic wrist system according to claim 7 comprising spring bias means for normally biasing said movable member into an obstructive position in said receptacle to secure a groove shaft of a terminal device in place.
Claim 28
Dependent Claim
38 words
A universal prosthetic wrist system according to claim 8 comprising a member rigidly connected across said receptacle for engaging a groove in the end of a terminal device shaft and thereby locking the angular position of the shaft.
Claim 29
Dependent Claim
69 words
A universal prosthetic wrist system according to claim 1 wherein the connector of the removable terminal mounting unit comprises: a. a ring-shaped cavity around said elongated receptacle; b. a rotatable tubular-shaped member mounted in said elongated receptacle; c. means for selectively locking said tubular-shaped member against rotatioN; and d. a ring-shaped member positioned in said cavity and comprising a resilient portion bearing against an end of said tubular-shaped member.
Claim 30
Dependent Claim
28 words
A universal prosthetic wrist system according to claim 10 wherein said elongated receptacle comprises threads in the side thereof for receiving a threaded shaft of a terminal device.
Claim 31
Dependent Claim
52 words
A universal wrist system according to claim 1 wherein said connector in said removable terminal mounting unit comprises a rotatable mounting for the shaft of the terminal device and a controllable lock for preventing rotation thereof, a cable connected to said lock for controlling the locking thereof and extending through said passage.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |