CN215349374U

CN215349374U - Patella superior approach tibia intramedullary nail bracket

Info

Publication number: CN215349374U
Application number: CN202120110615.5U
Authority: CN
Inventors: 柏吉军
Original assignee: Suqian Haoxin Machinery Co ltd
Current assignee: Suqian Haoxin Machinery Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-12-31
Anticipated expiration: 2031-01-15

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a patellar approach tibial intramedullary nail support. The utility model comprises a handle with a fixed part; the handle is provided with a first positioning pin and a second positioning pin, and the handle is detachably provided with a near-end aiming assembly or a far-end aiming assembly; the distal targeting assembly includes an extension rod removably mounted on a handle; the near-end aiming assembly comprises a near-end aiming frame detachably arranged on the handle, at least one sleeve hole III is formed in the near-end aiming frame, and a sleeve III is inserted into the sleeve hole III; the near-end aiming frame is detachably provided with a central guide block and a lateral guide block. The utility model can use a set of handle to install the near-end aiming component or the far-end aiming component respectively, and can accurately position the intramedullary nail, improve the implantation precision of the intramedullary nail, shorten the operation time and relieve the pain of patients.

Description

Patella superior approach tibia intramedullary nail bracket

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a patellar approach tibial intramedullary nail support.

Background

The internal fixation treatment of the tibial bone interlocking intramedullary nail for the tibial bone fracture is a universal method in China and China, has firm fixation, simple operation and good effect, and is well known. Tibial interlocking intramedullary nails typically include an intramedullary nail that is driven into the medullary cavity along the length of the tibial shaft, and then driven into the interlocking nail at the proximal and distal ends of the intramedullary nail. Before the locking of the proximal and distal interlocking nails, the aiming rod is required to pass through the aiming arm and abut against a platform at the proximal end or the distal end of the intramedullary nail so as to ensure the locking accuracy of the interlocking nails.

The sighting device in the prior art is difficult to accurately position the intramedullary nail, so that the implantation precision of the intramedullary nail is low, the position of the intramedullary nail needs to be continuously adjusted, the operation time is prolonged, and the pain of a patient is improved.

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages, the present invention provides a tibial intramedullary nail support for suprapatellar approach.

The utility model provides the following technical scheme:

a tibia intramedullary nail bracket with a suprapatellar approach comprises a handle provided with a fixing part; the handle is provided with a first positioning pin and a second positioning pin, and the handle is detachably provided with a near-end aiming assembly or a far-end aiming assembly;

the far-end aiming assembly comprises an extension bar detachably arranged on the handle, at least one sleeve hole I is formed in one end, far away from the handle, of the extension bar, and a sleeve I is inserted into the sleeve hole I; a positioning fixture block is further installed at one end of the extension bar, which is far away from the handle, and a positioning rod is inserted in the positioning fixture block; a far-end aiming frame is detachably mounted on one side of the lengthening rod, at least one sleeve hole II is formed in the far-end aiming frame, and a sleeve pipe II is inserted in the sleeve hole II;

the near-end aiming assembly comprises a near-end aiming frame detachably arranged on the handle, at least one sleeve hole III is formed in the near-end aiming frame, and a sleeve III is inserted into the sleeve hole III; the near-end aiming frame is detachably provided with a center guide block and a side guide block, two rows of first aiming holes are uniformly distributed on the center guide block, and two rows of second aiming holes are uniformly distributed on the side guide block.

The positioning fixture block is E-shaped, a positioning rod clamping groove is formed in the positioning fixture block, the positioning fixture block is clamped on the extension rod, the positioning rod is inserted into the positioning rod clamping groove, a spring positioning pin is further installed on the positioning fixture block, and one end of the spring positioning pin extends into the positioning rod clamping groove.

The far-end aiming frame is connected with the extension bar through a pin joint and is fixed through a locking screw I.

The extension bar is provided with a first positioning pin hole corresponding to the first positioning pin, is connected with the handle through a pin joint and is fixed through a second locking screw.

And the near-end aiming frame is provided with a second positioning pin hole corresponding to the second positioning pin, is connected with the handle through a pin joint and is fixed through a third locking screw.

And the symmetrical line between the two rows of aiming holes is superposed with the central line of the inner nail connected with one end of the fixing part.

And the symmetrical line between the two rows of aiming holes II is superposed with the central line of the inner nail connected with one end of the fixing part.

One end of the central guide block is provided with a central guide block clamping block, the middle of the near-end aiming frame is provided with a central guide block clamping groove, a first spring pin is arranged on the near-end aiming frame positioned in the middle of the bottom of the central guide block clamping groove, and a first spring pin clamping groove is correspondingly arranged on the central guide block.

And a lateral guide block clamping block is arranged at one end of the lateral guide block, a lateral guide block clamping groove is formed at one end of the near-end aiming frame, a second spring pin is arranged on the near-end aiming frame positioned in the middle of the bottom of the lateral guide block clamping groove, and a second spring pin clamping groove is correspondingly formed in the lateral guide block.

The handle is provided with a positioning hole.

The utility model has the beneficial effects that:

the utility model can use a set of handle to install the near-end aiming component or the far-end aiming component respectively, and can accurately position the intramedullary nail, improve the implantation precision of the intramedullary nail, shorten the operation time and relieve the pain of patients.

Drawings

FIG. 1 is a perspective view of the handle of the present invention;

FIG. 2 is a perspective view of the handle of the present invention with the distal targeting assembly installed;

FIG. 3 is an elevation view of the handle of the present invention with the distal targeting assembly mounted thereto;

FIG. 4 is a perspective view of the positioning clip of the present invention;

FIG. 5 is a perspective view of the handle of the present invention with the proximal targeting assembly installed;

FIG. 6 is an elevation view of the handle of the present invention mounting a proximal targeting assembly;

FIG. 7 is a top view of the handle of the present invention with the proximal targeting assembly installed;

FIG. 8 is a schematic view of a slot in a central guide block of the proximal aiming block of the present invention;

FIG. 9 is a schematic view of the proximal aiming block slot of the superior guide block of the present invention;

FIG. 10 is a perspective view of the lateral guide block of the present invention;

fig. 11 is a perspective view of the center guide block of the present invention.

Labeled as: the device comprises a handle 101, a first positioning pin 102, a second positioning pin 103, a positioning hole 104, a third locking screw 105, a fixing part 107, a second locking screw 108, a guide pin 109, an extension rod 110, a positioning fixture block 111, a positioning rod 112, a distal aiming bracket 114, a sleeve hole two 115, an inner nail 116, a sleeve one 117, a spring positioning pin 118, a positioning rod clamping groove 119, a proximal aiming bracket 201, a sleeve three 202, a spring stud one 203, a lateral guide block clamping groove 204, a spring stud two 205, a central guide block clamping groove 206, a central guide block 301, an aiming hole one 302, a spring stud clamping groove one 303, a central guide block fixture block 304, a lateral guide block 401, an aiming hole two 402, a spring stud clamping groove two 403 and a lateral guide block fixture block 404.

Detailed Description

As shown in the figures, the tibia intramedullary nail support for the suprapatellar approach comprises a handle 101, wherein the handle 101 is L-shaped, so that other parts can be conveniently held and installed, a fixing part 107 is arranged on one side of a short rod of the handle 101, and an inner nail 116 can be connected through the fixing part 107. In order to make it possible to grasp the insertion depth of the inner pin 116 after the inner pin 116 is inserted into the tibia marrow, a positioning hole 104 is provided on the handle 101 above one end of the fixing portion 107, and the implantation position of the inner pin 116 can be determined by inserting a guide pin 109 into the positioning hole 104.

A first positioning pin 102 and a second positioning pin 103 are arranged on a long rod of the handle 101 at intervals, and the first positioning pin 102, the second positioning pin 103 and the handle 101 are integrally formed, so that the problem that the positioning accuracy of the movably-installed positioning pins is reduced after the movably-installed positioning pins are used for a long time can be solved while the positioning accuracy is ensured. Either the proximal targeting assembly or the distal targeting assembly is removably mounted to the handle 101. Specifically, the distal aiming assembly comprises an extension bar 110 detachably mounted on the handle 101, and a plurality of hollowed through holes are formed in the extension bar 110, so that the weight of the whole support can be reduced, the fatigue of holding is reduced, and the doctor can insert the inner nail 116 accurately. A first positioning pin hole is formed in the extension bar 110 corresponding to the first positioning pin 102, and a threaded hole is formed in the extension bar 110. During installation, the first positioning pin 102 is inserted into the first positioning pin hole and then fixed by the second locking screw 108, so that the positions of the extension bar 110 and the handle 101 are relatively fixed. At least one sleeve hole I is arranged at one end of the extension bar 110 far away from the handle 101, the number and the position of the sleeve holes I are specifically determined according to the specification of the inner nail 116, a sleeve I117 can be inserted into the sleeve holes I, and a metal nail can be inserted into the sleeve I117. The end of the extension bar 110, which is far away from the handle 101, is further provided with a positioning clamping block 111, the positioning clamping block 111 is in an E shape, three protruding parts of the positioning clamping block 111 are provided with positioning bar clamping grooves 119, the positioning clamping block 111 is arranged on the extension bar 110 through clamping, one end of a first sleeve pipe 117 is clamped in the positioning bar clamping grooves 119, a positioning bar 112 is used for being inserted into the positioning bar clamping grooves 119, the positioning bar 112 is made to be inserted into a human body through the first sleeve pipe 117, one end of the positioning bar 112 is contacted with an inner nail 116, and therefore the insertion position of the inner nail 116 is accurately positioned. A spring positioning pin 118 is further installed on the positioning fixture block 111, one end of the spring positioning pin 118 extends into the positioning pin slot 119, and the spring positioning pin 118 can assist in positioning the positioning rod 112.

A distal aiming block 114 is detachably mounted on one side of the extension bar 110, and specifically, the distal aiming block 114 is connected with the extension bar 110 by a pin joint and the distal aiming block 114 is fixed relative to the extension bar 110 by a locking screw. The distal aiming block 114 is provided with at least one second sleeve hole 115, and the number and the position of the second sleeve holes 115 are specifically determined according to the specification of the inner nail 116. A second sleeve can be inserted into the second sleeve hole 115, and a metal nail can be inserted into the second sleeve.

The proximal aiming assembly comprises a proximal aiming frame 201 detachably mounted on the handle 101, the proximal aiming frame 201 is in an arc-shaped structure, a second positioning pin hole is formed in the proximal aiming frame 201 corresponding to the second positioning pin 103, and a threaded hole is formed in the proximal aiming frame 201. During installation, the second positioning pin 103 is inserted into the second positioning pin hole, and the third locking screw 105 is used to fix the positions of the proximal aiming block 201 and the handle 101 relatively. The proximal aiming block 201 is provided with at least one sleeve hole III, the number and the position of the sleeve holes III are specifically determined according to the specification of the inner nail 116, a sleeve III 202 is inserted into the sleeve hole III, and a metal nail can be inserted into the sleeve III 202.

The center guide block 301 and the lateral guide block 401 are detachably mounted on the near-end aiming frame 201, specifically, a center guide block clamping block 304 is arranged at one end of the center guide block 301, a center guide block clamping groove 206 is arranged in the middle of the near-end aiming frame 201, and a stepped groove is formed in the side groove wall of the center guide block clamping groove 206, so that the center guide block clamping block 304 can only be inserted into the center guide block clamping groove 206 from one end, and stable mounting is facilitated. In order to make the central guide block 301 not easy to move easily, a first spring pin 203 is installed on the proximal aiming block 201 located in the middle of the bottom of the central guide block slot 206, and a first spring pin slot 303 is correspondingly arranged on the central guide block 301. After the central guide block 301 is installed on the near-end aiming frame 201, one end of the first spring pin 203 can be inserted into the first spring pin clamping groove 303, so that the central guide block 301 is not easy to move, and the precision is guaranteed. One end of the lateral guide block 401 is provided with a lateral guide block fixture block 404, one end of the near-end aiming frame 201 is provided with a lateral guide block clamping groove 204, and a side groove wall of the lateral guide block clamping groove 204 is provided with a stepped groove, so that the lateral guide block fixture block 404 can only be inserted from one side of the lateral guide block clamping groove 204, and stable installation is facilitated. In order to make the lateral guide block 401 not easy to move easily, a second spring pin 205 is installed on the proximal aiming block 201 located in the middle of the bottom of the lateral guide block slot 204, and a second spring pin slot 403 is correspondingly arranged on the lateral guide block 401. After the lateral guide block 401 is mounted on the proximal aiming block 201, one end of the second spring pin 205 can be inserted into the second spring pin slot 403, so that the lateral guide block 401 is not easy to move.

Two rows of the first aiming holes 302 are uniformly distributed on the central guide block 301, the two rows of the first aiming holes 302 have a symmetry line, and the symmetry line between the two rows of the first aiming holes 302 is coincident with the central line of the inner nail 116. Two rows of second aiming holes 402 are uniformly distributed on the lateral guide block 401, a symmetry line is arranged in the two rows of second aiming holes 402, and the symmetry line between the two rows of second aiming holes 402 is superposed with the center line of the inner nail 116. Therefore, a detection rod can be inserted into the first aiming hole 302 or the second aiming hole 402 to detect the side of the inner nail 116, so that the position of the inner nail 116 can be determined, and the insertion accuracy of the inner nail 116 can be improved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A patellar approach tibial intramedullary nail bracket comprises a handle (101) provided with a fixing part (107); the method is characterized in that: a first positioning pin (102) and a second positioning pin (103) are arranged on the handle (101), and a near-end aiming assembly or a far-end aiming assembly is detachably arranged on the handle (101);

the far-end aiming assembly comprises an extension bar (110) detachably arranged on the handle (101), wherein one end, far away from the handle (101), of the extension bar (110) is provided with at least one first sleeve hole, and a first sleeve (117) is inserted into the first sleeve hole; a positioning fixture block (111) is further mounted at one end of the extension bar (110) far away from the handle (101), and a positioning rod (112) is inserted into the positioning fixture block (111); a far-end aiming frame (114) is detachably arranged on one side of the extension bar (110), at least one second sleeve hole (115) is formed in the far-end aiming frame (114), and a second sleeve is inserted into the second sleeve hole (115);

the near-end aiming assembly comprises a near-end aiming frame (201) detachably arranged on the handle (101), at least one sleeve hole III is formed in the near-end aiming frame (201), and a sleeve pipe III (202) is inserted into the sleeve hole III; the near-end aiming frame (201) is detachably provided with a center guide block (301) and a lateral guide block (401), two rows of aiming holes I (302) are uniformly distributed on the center guide block (301), and two rows of aiming holes II (402) are uniformly distributed on the lateral guide block (401).

2. The suprapatellar approach tibial intramedullary nail mount of claim 1, wherein: the positioning fixture block (111) is E-shaped, a positioning rod clamping groove (119) is formed in the positioning fixture block (111), the positioning fixture block (111) is clamped on the extension rod (110), the positioning rod (112) is inserted into the positioning rod clamping groove (119), a spring positioning pin (118) is further installed on the positioning fixture block (111), and one end of the spring positioning pin (118) extends into the positioning rod clamping groove (119).

3. The suprapatellar approach tibial intramedullary nail mount of claim 1, wherein: the far-end aiming frame (114) is connected with the extension bar (110) through a pin joint and is fixed through a locking screw.

4. The suprapatellar approach tibial intramedullary nail mount of claim 1, wherein: the extension bar (110) is provided with a first positioning pin hole corresponding to the first positioning pin (102), and the extension bar (110) is connected with the handle (101) through a pin joint and is fixed through a second locking screw (108).

5. The suprapatellar approach tibial intramedullary nail mount of claim 4, wherein: and a second positioning pin hole is formed in the near-end aiming frame (201) corresponding to the second positioning pin (103), and the near-end aiming frame (201) is connected with the handle (101) through a pin joint and is fixed through a third locking screw (105).

6. The suprapatellar approach tibial intramedullary nail mount of claim 1, wherein: the symmetrical line between the two rows of the first aiming holes (302) is superposed with the central line of the inner nail (116) connected with one end of the fixing part (107).

7. The suprapatellar approach tibial intramedullary nail mount of claim 6, wherein: and a symmetrical line between the two rows of aiming holes II (402) is superposed with the central line of the inner nail (116) connected with one end of the fixing part (107).

8. The suprapatellar approach tibial intramedullary nail mount of claim 1, wherein: center guide block fixture block (304) is equipped with to center guide block (301) one end, near-end aiming frame (201) middle part is equipped with center guide block draw-in groove (206), is located and installs spring pin (203) on near-end aiming frame (201) at center guide block draw-in groove (206) tank bottom middle part, is equipped with spring pin draw-in groove (303) on center guide block (301) correspondingly.

9. The suprapatellar approach tibial intramedullary nail mount of claim 8, wherein: lateral guide piece (401) one end is equipped with lateral guide piece fixture block (404), near-end aiming frame (201) one end is equipped with lateral guide piece draw-in groove (204), is located and installs spring pin two (205) on the near-end aiming frame (201) at lateral guide piece draw-in groove (204) tank bottom middle part, is equipped with spring pin draw-in groove two (403) on lateral guide piece (401) correspondingly.

10. The suprapatellar approach tibial intramedullary nail mount of claim 1, wherein: the handle (101) is provided with a positioning hole (104).