CN204379326U - A kind of medical femoral head withdrawing device - Google Patents
A kind of medical femoral head withdrawing device Download PDFInfo
- Publication number
- CN204379326U CN204379326U CN201420860963.4U CN201420860963U CN204379326U CN 204379326 U CN204379326 U CN 204379326U CN 201420860963 U CN201420860963 U CN 201420860963U CN 204379326 U CN204379326 U CN 204379326U
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- CN
- China
- Prior art keywords
- connecting rod
- fixed mechanism
- auxiliary clamping
- clamping fixed
- femoral head
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Abstract
The utility model discloses a kind of medical femoral head withdrawing device, belong to bone surgery medical instruments field.Use when being applicable to the operation of clinical orthopaedics artificial hip joint replacing.Comprise connecting rod, one end of connecting rod is handle, and the other end is the tapping screw thread head with its one; Connecting rod is provided with above tapping screw thread head an auxiliary clamping fixed mechanism; Described auxiliary clamping fixed mechanism be one centered by connecting rod the cross structure of protruding four bars, 4 bars of cross structure are respectively provided with a screwed hole.During use, section of collum femoris is thrust at tapping screw thread head tip, pressurize in tapping screw thread head screw-in spongy bone, then be screwed into femoral head by lock screw by the screwed hole in cross structure, then carrying handle can take out femoral head.This extraction apparatus for head of femur structure is simple, easy to operate, does not damage acetabular bone, effectively can reduce femoral head and take out difficulty, reduce operating time, ensures that operation is carried out smoothly.
Description
Technical field
This utility model belongs to technical field of medical instruments, particularly relates to a kind of medical femoral head withdrawing device.Use when being mainly used in the operation of clinical orthopaedics artificial hip joint replacing.
Background technology
At present, artificial total hip arthroplasty and artificial femoral head replacement are the most effective means of the whole pathological changes in latter stage for the treatment of hip joint.In operation process, need the femoral head taking out pathological changes, implantable artificial hip joint.Because pathological changes femoral head is subject to surrounding soft tissue and ligament protection, add hypertrophy and sclerosis, in operation process, pathological changes femoral head is often difficult to take out.
In prior art, doctor uses that spiral type head extractor is similar is screwed into one piece of screw in cancellous bone of femoral head usually, then carrying handle takes out femoral head, in order to hold femoral head, prevents from rotating, need firmly to beat into head extractor, easily cause femoral head and acetabulum injuries, and coping screw is shallow, more weak to bone hold, easily deviate from during lift, make to get head failure.
Publication number is that the utility model patent of CN2256709Y discloses a kind of screw extraction apparatus for head of femur, and the resistance that the helical form head of its front end is screwed in osseous tissue is large, not enough to the hold of osseous tissue.Publication number is that the medical femoral head of CN103876810A gets head unit, describe in its description 0007 paragragh, " during use; the pointed tooth of barrel forward end is inserted femoral head surfaces, can obtain capital hold, prevent femoral head from rotating; " in practical operation, because capital sclerotin hardness is higher, being be difficult to pointed tooth to insert in femoral head surfaces separately not executing in stressed situation, namely cannot realizing.
Summary of the invention
The purpose of this utility model is to provide a kind of medical femoral head withdrawing device, can play stable femoral head, improve the hold of head extractor, thus solve Problems existing in above-mentioned background technology.
The purpose of this utility model is achieved through the following technical solutions: a kind of medical femoral head withdrawing device, comprise connecting rod, one end of connecting rod is handle, the other end is the tapping screw thread head with its one, it is characterized in that: on connecting rod, be provided with an auxiliary clamping fixed mechanism above tapping screw thread head; Described auxiliary clamping fixed mechanism be one centered by connecting rod the cross structure of protruding four bars, a screwed hole is respectively provided with in the outer end of 4 bars of cross structure, also comprise the threaded lock screw of head coordinated with screwed hole, lock screw is screwed in femoral head by screwed hole and realizes holding femoral head preventing it from rotating.
During use, section of collum femoris is thrust at tapping screw thread head tip, pressurizeing screws in tapping screw thread head in spongy bone, then is screwed into femoral head by lock screw by the screwed hole in cross structure and prevents it from rotating, and then carrying handle can take out femoral head.
The beneficial effects of the utility model are: this medical femoral head withdrawing device structure is simple, easy to operate, effectively can reduce femoral head and take out difficulty, reduce operating time, ensure that operation is carried out smoothly.
Accompanying drawing explanation
Fig. 1 is an example structure schematic diagram of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is another example structure schematic diagram of the present utility model;
Fig. 4 is auxiliary clamping fixed mechanism structural representation.
Fig. 5 is auxiliary another embodiment schematic diagram of clamping fixed mechanism structure.
In figure: 1, tapping screw thread head; 3, hands handle; 2, connecting rod; 2.1, tapped through hole; 4, auxiliary clamping fixed mechanism; 4.1, installing hole; 4.2, screwed hole; 4.3, lock screw; 5, mounting pipe.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is further described.
Embodiment 1
Embodiment as depicted in figs. 1 and 2, a kind of medical femoral head withdrawing device, comprises connecting rod 2, and one end of connecting rod is handle 3, and the other end is the tapping screw thread head 1 with its one, and connecting rod is provided with above tapping screw thread head an auxiliary clamping fixed mechanism 4; Auxiliary clamping fixed mechanism be one centered by connecting rod the cross structure of protruding four bars, with connecting rod 2 in integrative-structure; The upper and lower end face of 4 bars of described auxiliary clamping fixed mechanism is flat; A screwed hole 4.2 is respectively provided with in the outer end of 4 bars of cross structure.Also comprise the threaded lock screw 4.3 coordinated with screwed hole 4.2, lock screw is screwed in femoral head by screwed hole 4.2 and realizes holding femoral head preventing it from rotating.
Embodiment 2
Another embodiment as shown in Figure 3 and Figure 4, a kind of medical femoral head withdrawing device comprises connecting rod 2, one end of connecting rod is handle 3, and the other end is the tapping screw thread head 1 with its one, and connecting rod 2 is provided with above tapping screw thread head an auxiliary clamping fixed mechanism 4; Described auxiliary clamping fixed mechanism and connecting rod 2 removably connect.Auxiliary clamping fixed mechanism is a flat cross structure, and its center has the installing hole 4.1 coordinated with connecting rod, and auxiliary clamping fixed mechanism 4 is set with by installing hole 4.1 and is fixed on connecting rod 2 and removably connects with connecting rod.
The present embodiment has at least 2 tapped through holes 2.1 be arranged above and below on described connecting rod 2 above tapping screw thread head, for regulating the upper-lower position of auxiliary clamping fixed mechanism on connecting rod 2.And 2 symmetrical screwed holes are had in the both sides of auxiliary clamping fixed mechanism symmetry, by the screw penetrating tapped through hole 2.1 and auxiliary clamping fixed mechanism both sides screwed hole on connecting rod, auxiliary clamping fixed mechanism is fixed on connecting rod 2.Also can on described connecting rod 2 above tapping screw thread head both sides respectively have at least 2 tapped blind holes be arranged above and below, auxiliary clamping fixed mechanism is fixed on connecting rod by the screw be screwed on screwed hole and connecting rod in tapped blind hole by auxiliary clamping fixed mechanism.
Above 2 embodiments are suitable for the situation that auxiliary clamping fixed mechanism thickness is greater than 5mm.
Embodiment 3
Another embodiment as shown in Figure 5, auxiliary clamping fixed mechanism is a flat cross structure, its center has the installing hole coordinated with connecting rod, installing hole there is the mounting pipe 5 that an internal diameter vertically upward coordinates with connecting rod, the tube wall of mounting pipe 5 has two symmetrical screwed holes, described connecting rod 2 has above tapping screw thread head at least 2 tapped through holes be arranged above and below, auxiliary clamping fixed mechanism is sleeved on connecting rod, by the screw penetrating tapped through hole on mounting pipe 5 upper screwed hole and connecting rod, auxiliary clamping fixed mechanism is fixed on connecting rod 2.
Claims (7)
1. a medical femoral head withdrawing device, comprises connecting rod, and one end of connecting rod is handle, and the other end is the tapping screw thread head with its one, it is characterized in that: on connecting rod, be provided with an auxiliary clamping fixed mechanism above tapping screw thread head; Described auxiliary clamping fixed mechanism be one centered by connecting rod the cross structure of protruding four bars, a screwed hole is respectively provided with in the outer end of 4 bars of cross structure, also comprise the threaded lock screw coordinated with screwed hole, lock screw is screwed in femoral head by screwed hole and realizes holding femoral head preventing it from rotating.
2. the medical femoral head withdrawing device of one according to claim 1, is characterized in that: described auxiliary clamping fixed mechanism and connecting rod are integrative-structure.
3. the medical femoral head withdrawing device of one according to claim 1, it is characterized in that: described auxiliary clamping fixed mechanism is a flat cross structure, its center has the installing hole coordinated with connecting rod, and auxiliary clamping fixed mechanism is sleeved on and fixingly on connecting rod removably connects with connecting rod.
4. the medical femoral head withdrawing device of one according to claim 1, is characterized in that: the upper and lower end face of 4 bars of described auxiliary clamping fixed mechanism is flat.
5. the medical femoral head withdrawing device of one according to claim 3, it is characterized in that: on described connecting rod, above tapping screw thread head, have at least 2 tapped through holes be arranged above and below, and 2 symmetrical tapped through holes are had in the both sides of auxiliary clamping fixed mechanism symmetry, by the screw penetrating tapped through hole on tapped through hole and connecting rod on auxiliary clamping fixed mechanism, auxiliary clamping fixed mechanism is fixed on connecting rod.
6. the medical femoral head withdrawing device of one according to claim 3, it is characterized in that: on described connecting rod, above tapping screw thread head, both sides respectively have at least 2 tapped blind holes be arranged above and below, have 2 symmetrical tapped through holes in the both sides of auxiliary clamping fixed mechanism symmetry, auxiliary clamping fixed mechanism is by the screw that is screwed on tapped through hole and connecting rod in tapped blind hole and be fixed on connecting rod by auxiliary clamping fixed mechanism.
7. the medical femoral head withdrawing device of the one according to claim 1 or 3, it is characterized in that: described auxiliary clamping fixed mechanism is a flat cross structure, its center has the installing hole coordinated with connecting rod, installing hole there is the mounting pipe that an internal diameter vertically upward coordinates with connecting rod, the tube wall of mounting pipe has two symmetrical screwed holes, described connecting rod has above tapping screw thread head at least 2 tapped through holes be arranged above and below, auxiliary clamping fixed mechanism is sleeved on connecting rod, by the screw penetrating tapped through hole on mounting pipe upper screwed hole and connecting rod, auxiliary clamping fixed mechanism is fixed on connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860963.4U CN204379326U (en) | 2014-12-30 | 2014-12-30 | A kind of medical femoral head withdrawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860963.4U CN204379326U (en) | 2014-12-30 | 2014-12-30 | A kind of medical femoral head withdrawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204379326U true CN204379326U (en) | 2015-06-10 |
Family
ID=53352087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420860963.4U Withdrawn - After Issue CN204379326U (en) | 2014-12-30 | 2014-12-30 | A kind of medical femoral head withdrawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204379326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546034A (en) * | 2014-12-30 | 2015-04-29 | 欧阳晓 | Medical femoral head extractor |
-
2014
- 2014-12-30 CN CN201420860963.4U patent/CN204379326U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546034A (en) * | 2014-12-30 | 2015-04-29 | 欧阳晓 | Medical femoral head extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150610 Effective date of abandoning: 20170725 |