CA2573570A1 - Surgical lever - Google Patents
Surgical lever Download PDFInfo
- Publication number
- CA2573570A1 CA2573570A1 CA002573570A CA2573570A CA2573570A1 CA 2573570 A1 CA2573570 A1 CA 2573570A1 CA 002573570 A CA002573570 A CA 002573570A CA 2573570 A CA2573570 A CA 2573570A CA 2573570 A1 CA2573570 A1 CA 2573570A1
- Authority
- CA
- Canada
- Prior art keywords
- lever
- surgical
- acetabulum
- support surface
- surgical lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
Abstract
Surgical lever, particularly for lifting the femur from the hip bone. It comprises an actuating handle ( 5 ) and an engagement device ( 6 ) and is characterized in that a projection ( 9, 11 ) dimensioned for support within the depth of the acetabulum is arranged between these two parts ( 5, 6 ). For adaptation to the inner surface of the acetabulum, said projection ( 9, 11 ) is expediently of a spherical configuration and can be made available with a varying radius.
Description
Surgical lever The invention relates to a surgical lever, particularly for lifting the femur from the hip bone.
Surgical levers of this kind are typically used in operations in which the natural hip joint is replaced by an artificial one, so that, after resection of the femoral head, the femur can be held in such a way that the femoral medullary cavity can be worked. If the resection is performed with the hip joint in the dislocated state, there is also the possibility of lifting the femur from the hip bone during the resection.
In the known surgical levers with which the femur is lifted from the hip bone, the margin of the acetabuium forms the abutment on which the sur-gical lever is supported. This is disadvantageous because, on the one hand, structures on the margin of the acetabulum may be damaged, and, on the other hand, the margin of the acetabuium does not offer a secure abut-ment, for example one that avoids lateral slipping of the lever.
The object of the invention is to make available a surgical lever that avoids these disadvantages.
The object is achieved by the fact that a projection dimensioned for support within the depth of the acetabutum is arranged between the actuating han-dle and the engagement device. Because of its concave shape, the depth of the acetabuium offers a stable abutment for the surgical lever. By virtue of the concavity of the acetabuium, the projection, once in position, obtains a secure hold therein.
Surgical levers of this kind are typically used in operations in which the natural hip joint is replaced by an artificial one, so that, after resection of the femoral head, the femur can be held in such a way that the femoral medullary cavity can be worked. If the resection is performed with the hip joint in the dislocated state, there is also the possibility of lifting the femur from the hip bone during the resection.
In the known surgical levers with which the femur is lifted from the hip bone, the margin of the acetabuium forms the abutment on which the sur-gical lever is supported. This is disadvantageous because, on the one hand, structures on the margin of the acetabulum may be damaged, and, on the other hand, the margin of the acetabuium does not offer a secure abut-ment, for example one that avoids lateral slipping of the lever.
The object of the invention is to make available a surgical lever that avoids these disadvantages.
The object is achieved by the fact that a projection dimensioned for support within the depth of the acetabutum is arranged between the actuating han-dle and the engagement device. Because of its concave shape, the depth of the acetabuium offers a stable abutment for the surgical lever. By virtue of the concavity of the acetabuium, the projection, once in position, obtains a secure hold therein.
A further advantage offered by the acetabulum, by virtue of its concave shape, is that the direction in which the abutment acts against the surgical lever is not defined in a fixed manner. The direction in which the lever is supported in the acetabulum can differ depending on the particular situa-tion. The support within the depth of the acetabulum affords safety under any direction of force. The femur can be lifted from the hip bone in different directions.
In an advantageous embodiment, the projection of the surgical lever has a support surface which has a convex configuration matching the curvature of the acetabulum. Local loading of the acetabuium is avoided by means of this configuration, since the support surface acts on a larger surface area.
It is also advantageous if several support surfaces with different radii of cur-vature are made available and are used alternately depending on the size or radius of curvature of the acetabulum. The acetabula of different people are differently shaped and, in particular, have different diameters. By means of the support surfaces with different radii of curvature, the surgical lever can be used on the greatest possible number of people. Several levers with dif-ferently curved support surfaces are provided, or a number of exchangeable parts forming differently curved support surfaces are provided.
In an advantageous embodiment, the support surface has an at least hemi-spherical configuration. This makes it particularly easy to insert into the acetabulum, and it automatically centers itself therein.
The connection between surgical lever and support surface is preferably es-tablished via a conical plug connection, the cone angle being chosen such that the support surface on the one hand does not inadvertently come loose and on the other hand can be exchanged for another one by simple removal and replacement. The part forming the support surface can be connected rigidly to the lever. During lever movement, the support surface then slides within the acetabulum. It is also possible, however, to join this part to the lever in an articulated manner, such that the lever movement takes place at the hinge, while the support surface remains stationary in the acetabulum.
The engagement device advantageously has a concave shape in the working direction, in such a way that it can safely engage the external shape of the bone, particularly of the trochanter. The concave configuration is suitable to avoid the trochanter slipping from the surgical lever.
The invention is described below with reference to the attached drawing and on the basis of an advantageous illustrative embodiment. The single figure shows a plan view of a surgical lever according to the invention in use on a hip joint.
A human hip bone is shown, and also part of the left femur 2, of which the femoral head has been resected in the area of the neck of the femur and removed. The resection surface 4 and the acetabulum 10 are exposed. The femur 2 is lifted from the hip bone 1 with the aid of a surgical lever 3 ac-cording to the invention and is inwardly rotated in such a way that the femoral medullary cavity is accessible for working by the operating surgeon.
The surgical lever 3 engages on the greater trochanter 8 of the femur 2.
The surgical lever 3 comprises an actuating handle 5 and an engagement device 6. The actuating handle 5 and the engagement device 6 are elongate elements which, at their inner ends, are rigidly connected via an intermedi-ate piece 7 that extends substantially perpendicular to both of them. At its end, the engagement device 6 is shaped concavely by formation of a curved-back nose and is thereby adapted to the external shape of the greater trochanter 8.
A cone 9 is arranged at the inner end of the engagement device 6. The cone 9, set back slightly in the direction of the outer end of the engagement de-vice 6, forms a continuation of the intermediate piece 7. A sphere segment 11 is connected to the cone 9 via a conical plug connection, the sectional surface of said sphere segment 11 being provided with a conical bore that matches the cone 9. The outer surface of the sphere segment 11 is located within the acetabulum 10 and is shaped, as a support surface, according to the curvature of the acetabulum 10. The cone 9, together with the sphere segment 11, forms a projection via which the surgical lever 3 is supported within the depth of the acetabuium 10.
The sphere segment 11 is held securely by the acetabulum 10. The sphere segment 11 is not moved from its position, even by forces acting transverse to the cone 9. Moreover, the sphere segment 11 can be turned in all direc-tions within the acetabulum 10, such that the surgical, lever can be applied from different directions and also at different angles. By way of the sphere segment 11, the acetabulum 10 forms an abutment that permits safe and versatile use of the surgical lever 3.
In an advantageous embodiment, the projection of the surgical lever has a support surface which has a convex configuration matching the curvature of the acetabulum. Local loading of the acetabuium is avoided by means of this configuration, since the support surface acts on a larger surface area.
It is also advantageous if several support surfaces with different radii of cur-vature are made available and are used alternately depending on the size or radius of curvature of the acetabulum. The acetabula of different people are differently shaped and, in particular, have different diameters. By means of the support surfaces with different radii of curvature, the surgical lever can be used on the greatest possible number of people. Several levers with dif-ferently curved support surfaces are provided, or a number of exchangeable parts forming differently curved support surfaces are provided.
In an advantageous embodiment, the support surface has an at least hemi-spherical configuration. This makes it particularly easy to insert into the acetabulum, and it automatically centers itself therein.
The connection between surgical lever and support surface is preferably es-tablished via a conical plug connection, the cone angle being chosen such that the support surface on the one hand does not inadvertently come loose and on the other hand can be exchanged for another one by simple removal and replacement. The part forming the support surface can be connected rigidly to the lever. During lever movement, the support surface then slides within the acetabulum. It is also possible, however, to join this part to the lever in an articulated manner, such that the lever movement takes place at the hinge, while the support surface remains stationary in the acetabulum.
The engagement device advantageously has a concave shape in the working direction, in such a way that it can safely engage the external shape of the bone, particularly of the trochanter. The concave configuration is suitable to avoid the trochanter slipping from the surgical lever.
The invention is described below with reference to the attached drawing and on the basis of an advantageous illustrative embodiment. The single figure shows a plan view of a surgical lever according to the invention in use on a hip joint.
A human hip bone is shown, and also part of the left femur 2, of which the femoral head has been resected in the area of the neck of the femur and removed. The resection surface 4 and the acetabulum 10 are exposed. The femur 2 is lifted from the hip bone 1 with the aid of a surgical lever 3 ac-cording to the invention and is inwardly rotated in such a way that the femoral medullary cavity is accessible for working by the operating surgeon.
The surgical lever 3 engages on the greater trochanter 8 of the femur 2.
The surgical lever 3 comprises an actuating handle 5 and an engagement device 6. The actuating handle 5 and the engagement device 6 are elongate elements which, at their inner ends, are rigidly connected via an intermedi-ate piece 7 that extends substantially perpendicular to both of them. At its end, the engagement device 6 is shaped concavely by formation of a curved-back nose and is thereby adapted to the external shape of the greater trochanter 8.
A cone 9 is arranged at the inner end of the engagement device 6. The cone 9, set back slightly in the direction of the outer end of the engagement de-vice 6, forms a continuation of the intermediate piece 7. A sphere segment 11 is connected to the cone 9 via a conical plug connection, the sectional surface of said sphere segment 11 being provided with a conical bore that matches the cone 9. The outer surface of the sphere segment 11 is located within the acetabulum 10 and is shaped, as a support surface, according to the curvature of the acetabulum 10. The cone 9, together with the sphere segment 11, forms a projection via which the surgical lever 3 is supported within the depth of the acetabuium 10.
The sphere segment 11 is held securely by the acetabulum 10. The sphere segment 11 is not moved from its position, even by forces acting transverse to the cone 9. Moreover, the sphere segment 11 can be turned in all direc-tions within the acetabulum 10, such that the surgical, lever can be applied from different directions and also at different angles. By way of the sphere segment 11, the acetabulum 10 forms an abutment that permits safe and versatile use of the surgical lever 3.
Claims (5)
1. A surgical lever, particularly for lifting the femur (2) from the hip bone (1), with an actuating handle (5), an engagement device (6), and a projection (9, 11) dimensioned for support within the depth of the acetabulum and arranged between the actuating handle (5) and the engagement device (6), the projection having a convex support surface (11), characterized in that the support surface (11) is con-nected to the surgical lever via a conical plug connection.
2. The surgical lever as claimed in claim 1, characterized in that the lever can be made available with support surfaces (11) of varying ra-dius of curvature.
3. The surgical lever as claimed in claim 1 or 2, characterized in that a part (11) forming the support surface is exchangeable and can be made available with a varying radius of curvature.
4. The surgical lever as claimed in one of claims 1 through 3, character-ized in that the support surface has an at least hemispherical configu-ration.
5. The surgical lever as claimed in one of claims 1 through 4, character-ized in that the engagement device (6) has a concave configuration in the working direction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2004/006742 WO2005122910A1 (en) | 2004-06-22 | 2004-06-22 | Surgical lever |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2573570A1 true CA2573570A1 (en) | 2005-12-29 |
Family
ID=34957871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002573570A Abandoned CA2573570A1 (en) | 2004-06-22 | 2004-06-22 | Surgical lever |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20080045967A1 (en) |
| EP (1) | EP1761175B1 (en) |
| AT (1) | ATE506012T1 (en) |
| BR (1) | BRPI0418914B8 (en) |
| CA (1) | CA2573570A1 (en) |
| DE (1) | DE502004012428D1 (en) |
| ES (1) | ES2362879T3 (en) |
| MX (1) | MXPA06015008A (en) |
| WO (1) | WO2005122910A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8974462B2 (en) | 2008-06-13 | 2015-03-10 | Pivot Medical, Inc. | Devices and methods for minimally invasive access into a joint |
| EP2317942B1 (en) | 2008-06-13 | 2020-02-12 | Stryker Corporation | Apparatus for joint distraction |
| FR2945436A1 (en) * | 2009-05-14 | 2010-11-19 | Tornier Sa | SURGICAL INSTRUMENTATION OF BONE DISTRACTION OF THE SHOULDER |
| US9186181B2 (en) | 2009-03-17 | 2015-11-17 | Pivot Medical, Inc. | Method and apparatus for distracting a joint |
| CA2754905A1 (en) * | 2009-03-17 | 2010-09-23 | Pivot Medical, Inc. | Method and apparatus for distracting a joint, including the provision and use of a novel joint-spacing balloon catheter and a novel inflatable perineal post |
| US10426453B2 (en) | 2009-03-17 | 2019-10-01 | Pivot Medical, Inc. | Method and apparatus for distracting a joint |
| US8721649B2 (en) | 2009-12-04 | 2014-05-13 | Pivot Medical, Inc. | Hip joint access using a circumferential wire and balloon |
| US9119644B2 (en) * | 2010-08-21 | 2015-09-01 | New York Society For The Ruptured And Crippled Maintaining The Hospital For Special Surgery | Instruments for use in femoroacetabular impingement procedures |
| EP2637728A4 (en) | 2010-11-08 | 2015-05-06 | Pivot Medical Inc | Method and apparatus for distracting a joint |
| DE102012105264B4 (en) * | 2012-06-18 | 2016-06-09 | MAQUET GmbH | Device for fixing a femur in hip endoprosthesis |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4686972A (en) * | 1986-04-30 | 1987-08-18 | Kurland Kenneth Z | Surgical deflector and drilling guide |
| US4995875A (en) * | 1988-05-27 | 1991-02-26 | Cecil Coes | Femoral elevating tool |
| US5217463A (en) * | 1990-04-11 | 1993-06-08 | Mikhail W F Michael | Method for performing knee surgery and retractors for use therein |
| CH685471A5 (en) * | 1991-06-26 | 1995-07-31 | Sulzer Ag | Rash instrument for Hüftgelenkprothesenschäfte. |
| SE9200597D0 (en) * | 1992-02-28 | 1992-02-28 | Astra Ab | HIP JOINT PROSTHESIS II |
| US5971920A (en) * | 1997-06-18 | 1999-10-26 | Nagel; Gunther Peter | Surgical retractor |
| US6354994B1 (en) * | 1998-01-23 | 2002-03-12 | Rultract, Inc. | Surgical support apparatus with specialized rakes and method of xiphoid retraction |
| WO2000009017A1 (en) * | 1998-08-10 | 2000-02-24 | Coroneo, Inc. | Surgical suture and associated anchoring mechanism for tissue retraction |
| US6416465B2 (en) * | 2000-04-14 | 2002-07-09 | Salvador A. Brau | Surgical retractor and related surgical approach to access the anterior lumbar region |
| US6296609B1 (en) * | 2000-04-14 | 2001-10-02 | Salvador A. Brau | Surgical retractor and related surgical approach to access the anterior lumbar region |
| US6692434B2 (en) * | 2000-09-29 | 2004-02-17 | Stephen Ritland | Method and device for retractor for microsurgical intermuscular lumbar arthrodesis |
| US6679888B2 (en) * | 2001-05-29 | 2004-01-20 | Synthes | Femur lever |
| US6855149B2 (en) * | 2003-02-27 | 2005-02-15 | Zimmer Technology, Inc. | Posterior retractor and method of use for minimally invasive hip surgery |
-
2004
- 2004-06-22 BR BRPI0418914A patent/BRPI0418914B8/en not_active IP Right Cessation
- 2004-06-22 ES ES04740170T patent/ES2362879T3/en active Active
- 2004-06-22 US US11/630,266 patent/US20080045967A1/en not_active Abandoned
- 2004-06-22 MX MXPA06015008A patent/MXPA06015008A/en active IP Right Grant
- 2004-06-22 AT AT04740170T patent/ATE506012T1/en active
- 2004-06-22 DE DE502004012428T patent/DE502004012428D1/en active Active
- 2004-06-22 WO PCT/EP2004/006742 patent/WO2005122910A1/en active Application Filing
- 2004-06-22 CA CA002573570A patent/CA2573570A1/en not_active Abandoned
- 2004-06-22 EP EP04740170A patent/EP1761175B1/en not_active Not-in-force
Also Published As
| Publication number | Publication date |
|---|---|
| US20080045967A1 (en) | 2008-02-21 |
| MXPA06015008A (en) | 2007-03-27 |
| ATE506012T1 (en) | 2011-05-15 |
| EP1761175B1 (en) | 2011-04-20 |
| BRPI0418914A (en) | 2007-11-27 |
| DE502004012428D1 (en) | 2011-06-01 |
| ES2362879T3 (en) | 2011-07-14 |
| EP1761175A1 (en) | 2007-03-14 |
| WO2005122910A1 (en) | 2005-12-29 |
| BRPI0418914B8 (en) | 2021-06-22 |
| BRPI0418914B1 (en) | 2014-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20120924 |