CN218899659U

CN218899659U - Pelvis nail placing instrument

Info

Publication number: CN218899659U
Application number: CN202222278071.0U
Authority: CN
Inventors: 吴敏; 王晓盼; 赵培帅; 陈笑天; 官建中; 李仁杰
Original assignee: First Affiliated Hospital of Bengbu Medical College
Current assignee: First Affiliated Hospital of Bengbu Medical College
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-04-25
Anticipated expiration: 2032-08-29

Abstract

The application relates to the field of medical instruments, in particular to a pelvic nail placing instrument. The pelvis nail placing instrument comprises a sleeve, an adjusting component and a Kirschner wire guide which are connected in sequence, and also comprises a positioning component. The positioning assembly comprises a positioning rod and a pelvis attaching part which are connected, and the positioning rod is sleeved in the sleeve; the adjusting assembly comprises a length adjusting rod and an angle adjusting part which are connected, the length adjusting rod is connected with the sleeve, and the angle adjusting part is connected with the Kirschner wire guide. The pelvis nail instrument of this application is through the sleeve with the cooperation of locating component is fixed a position, assists doctor accurate nail that puts. The length adjusting rod and the angle adjusting part can be used for carrying out secondary adjustment in operation according to the requirement in operation. The pelvis nail placing instrument can be repeatedly used, the nail placing position is adjusted according to different pelvis nail placing requirements of patients, materials are saved, and time for preoperative planning and guide plate production is shortened.

Description

Pelvis nail placing instrument

Technical Field

The application relates to the field of medical instruments, in particular to a pelvic nail placing instrument.

Background

The pelvis nail is arranged from the side face of the pelvis to the sacrum through the sacroiliac joint, and because a plurality of tissues, organs, blood vessels and the like are arranged around the pelvis, repeated perspective is often needed in the operation to ensure that the position of the nail is not deviated, so that the bone cortex is punctured, the damage is caused, and the risk of the operation is increased. In order to improve the accuracy of the operation and reduce the risk, the operation of the doctor is often assisted by customizing the guide plate in a personalized manner for the patient. Personalized custom guides can reduce the number of perspectives for accurate nail placement by the physician, but the process from guide customization to production printing often requires some time and is difficult to fine tune during surgery. Sometimes, the design and printing time is too long, the time conflict with the operation time is likely, the operation cannot be performed in time, each patient can customize the guide plate in a personalized way, the guide plate cannot be used repeatedly, and thus the waste of materials is caused.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present application is to provide a pelvic stapling instrument, which can achieve accurate stapling and secondary fine adjustment in surgery, for solving the problems in the prior art.

To achieve the above object, the present application provides a pelvic stapling instrument, comprising a sleeve, an adjusting assembly and a kirschner wire guide, which are sequentially connected, and further comprising a positioning assembly. The positioning assembly comprises a positioning rod and a pelvis attaching part which are connected, the positioning rod is sleeved in the sleeve, the adjusting assembly comprises a length adjusting rod and an angle adjusting part which are connected, the length adjusting rod is connected with the sleeve, and the angle adjusting part is connected with the Kirschner wire guide.

In some embodiments of the present application, the positioning rod is provided with a chute, and the sleeve is provided with a slider, and the slider can slide relative to the chute.

In some embodiments of the present application, the chute includes a plurality of sub-chutes, and the slider includes a plurality of sub-sliders in one-to-one correspondence with the sub-chutes.

In some embodiments of the present application, a sleeve mount for retaining the sleeve and the locating lever is also included.

In some embodiments of the present application, the length adjusting rod includes a fixed rod and a sliding rod, the sliding rod may slide relative to the fixed rod, the fixed rod is connected to the sleeve, the sliding rod is connected to the angle adjusting portion, and a sliding rod accommodating cavity for accommodating a portion of the sliding rod is provided on the angle adjusting portion.

In some embodiments of the application, the length adjusting rod and the angle adjusting part are respectively provided with scales, and the length adjusting range of the length adjusting rod is-10 mm; and/or the angle adjusting range of the angle adjusting part is-60 degrees to 60 degrees.

In some embodiments of the present application, the sliding rod further comprises a length fixing member for fixing the fixing rod and the sliding rod, and an angle fixing member for fixing the angle adjusting portion and the sliding rod.

In some embodiments of the present application, the device further comprises a k-wire, and the k-wire guide is provided with a k-wire accommodating cavity for accommodating the k-wire.

In some embodiments of the present application, the k-wire guide comprises a plurality of k-wire guide lumens.

In some embodiments of the present application, in the initial state, the sleeve and the kirschner wire guide are on the same plane, and the axis extending direction of the kirschner wire guide is parallel to the axis extending direction of the positioning rod.

In some embodiments of the present application, the pelvic girdle comprises a girdle surface; and/or a plurality of retention holes are arranged on the pelvis attaching part.

Compared with the prior art, the beneficial effects of this application are:

1) The pelvis nail instrument of putting of this application, according to the pelvis laminating portion of preoperative design can be fine laminating pelvis and simulate the operation region, play the effect of location, the rethread is located the locating lever cover in the sleeve, and the cooperation kirschner wire director carries out the guide and puts the needle to assist the doctor to realize accurate nail of putting.

2) The length adjusting rod and the angle adjusting part can be used for carrying out secondary adjustment according to the requirement in operation.

3) The pelvis nail placing instrument can be repeatedly used except for other components except the positioning component, the nail placing position is adjusted according to different pelvis nail placing requirements of patients, materials are saved, and time for preoperative planning and guide plate production is shortened.

Drawings

Fig. 1 shows a schematic view of the structure of the pelvic stapling instrument of the present application.

Fig. 2 is a schematic structural perspective view of the pelvic stapling instrument (without pelvic attachment portion) of the present application.

Fig. 3 is a schematic top view of the structure of the pelvic stapling instrument of the present application.

Fig. 4 shows a partial schematic view of the pelvic stapling instrument of the present application.

Fig. 5 is a schematic view showing the structure of the pelvis nailing device in the use state.

Description of element numbers:

1. sleeve barrel

11. Sleeve fixing piece

2. Adjusting assembly

21. Length fixing piece

22. Length adjusting rod

221. Fixing rod

222. Sliding rod

23. Angle adjusting part

24. Angle fixing piece

3. Kirschner wire guide

31. Kirschner wire

4. Positioning assembly

41. Positioning rod

42. Pelvis attaching part

421. Attaching surface

422. Retention hole

Detailed Description

The following detailed description of the embodiments of the present application is provided in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present application and are not limiting of the present application.

The terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

The embodiment of the application provides a pelvis nail placing instrument, which comprises a sleeve 1, an adjusting component 2 and a Kirschner wire guide 3 which are sequentially connected, and further comprises a positioning component 4 as shown in figures 1 to 5. The positioning assembly comprises a positioning rod 41 and a pelvis attaching part 42 which are connected, and the positioning rod 41 is sleeved in the sleeve 1; the adjusting assembly 2 comprises a length adjusting rod 22 and an angle adjusting part 23 which are connected, wherein the length adjusting rod 22 is connected with the sleeve 1, and the angle adjusting part 23 is connected with the Kirschner wire guide 3. The pelvis nail instrument of this application is fixed after pasting the pelvis laminating portion that has planned before the art in the corresponding position of patient pelvis, then will sleeve 1 cover is in on the locating lever 41, adjust length adjustment pole 22 and angle adjustment portion 23 respectively and fix after the scale when planning, sleeve 1 moves suitable position back and is fixed with locating lever 1. Finally, the Kirschner wire guide 3 is used for guiding the needle, so that the needle placement position can be simply and rapidly found, the preparation time of the needle in the operation is greatly shortened, and the doctor can pass through the adjusting assembly 2 and finely adjust the needle according to experience.

In the pelvis nail placing apparatus provided in this embodiment, as shown in fig. 1, the positioning rod 41 is provided with a chute 411, the sleeve 1 is provided with a slide block 12, and the slide block 12 can slide relative to the chute 411 and drive the sleeve 1 to slide to a proper position on the positioning rod 41. In some embodiments, the chute 411 includes a plurality of sub-chutes, and the slider 12 includes a plurality of sub-sliders corresponding to the sub-chutes one by one. More specifically, the shape of the chute is not limited. For example, the chute is shaped like an I. In some embodiments, each of the sub-sliding grooves is symmetrically distributed in the positioning rod 41. For example, the positioning rod 41 is provided with two sub-sliding grooves, for example, the sub-sliding grooves are concave, and are matched with the I-shaped sliding blocks on the sleeve 1 to be matched with the two sub-sliding blocks in the sleeve, so that the sleeve 1 can be slidably adjusted when being sleeved on the positioning rod 41, and the adjustment of the instrument is facilitated.

In the pelvic nailing apparatus provided in the embodiment of the present application, as shown in fig. 1, a sleeve fixing member 11 for fixing the sleeve 1 and the positioning rod 41 is further included. In the actual operation process, after the sleeve 1 is sleeved on the positioning rod 41, the sleeve is slid to a proper position, and the sleeve fixing piece 11 is utilized to fix, and during fixing, the depth of the sleeve fixing piece 11 in the sleeve 1 can be rotationally adjusted, so that the sleeve fixing piece 11 is abutted against the contact surface of the positioning rod 41, the positioning rod 41 is tightly connected with the sleeve 1, and the positioning rod 41 is prevented from sliding on the sleeve 1. In some embodiments, the sleeve fixing member 11 may be a screw, and the sleeve 1 is provided with a screw hole matched with the screw.

In the pelvis nail setting apparatus provided by this embodiment, as shown in fig. 1, the length adjusting rod 22 includes a fixed rod 221 and a sliding rod 222, the sliding rod 222 may slide relative to the fixed rod 221, the fixed rod 221 is connected to the sleeve 1, the sliding rod 222 is connected to the angle adjusting portion 23, a sliding rod accommodating cavity for accommodating a part of the sliding rod 222 is provided on the angle adjusting portion 23, the setting of the sliding rod accommodating cavity is convenient for the angle fixing member 24 and the sliding rod 222 contacts inside, the sliding rod 222 located outside the accommodating cavity is convenient for observe the scale, and the length is adjusted. In operation, the angle adjusting part 23 may guide the kirschner wire guide 3 to rotate axially relative to the length adjusting rod 22, so as to fine-adjust the angle, thereby adjusting the direction of the kirschner wire 31 and facilitating the placement of the needle.

In the pelvic stapling apparatus provided in the embodiments of the present application, as shown in fig. 3 or fig. 4, in some embodiments, graduations are provided on the length adjusting lever 22 and the angle adjusting portion 23, respectively. For example, the length adjustment range of the length adjustment lever 22 is-10 mm to 10mm; the angle adjusting section 23 has an angle adjusting range of-60 DEG to 60 deg. The initial state of the length adjustment lever 22 and the angle adjustment section 23 is a 0 scale. The adjusting assembly 2 further includes a length fixing member 21 and an angle fixing member 24, the length fixing member 21 for fixing the fixing lever 221 and the sliding lever 222, and the angle fixing member 24 for fixing the angle adjusting portion 23 and the sliding lever 222. When the length is fixed, the depth of the length fixing piece 21 entering the fixing rod 221 can be adjusted in a rotating way, so that the contact surface of the length fixing piece 21 and the sliding rod 222 is propped against, the fixing rod 221 is tightly connected with the sliding rod 222, and the sliding rod 222 is prevented from sliding in the fixing rod 221. In some embodiments, the length fixing member 21 may be a screw, and the fixing rod 221 is provided with a screw hole matched with the screw. When the angle is fixed, the depth of the angle fixing piece 24 entering the sliding accommodating cavity can be rotationally adjusted, so that the angle fixing piece 24 is propped against the contact surface of the sliding rod 222, the sliding rod 222 is tightly connected with the angle adjusting part 23, and the fixing of the sliding rod 222 and the angle adjusting part 23 is realized, so that the angle of the angle adjusting part 23 on the sliding rod 222 is prevented from changing. In some embodiments, the angle fixing member 24 may be a screw, and the angle adjusting portion 23 is provided with a screw hole matched with the screw.

In the pelvic nailing device provided by the embodiment of the application, as shown in fig. 1 or fig. 2, the kirschner wire guide 3 further comprises a kirschner wire 31, and the kirschner wire guide 3 is provided with a kirschner wire accommodating cavity for accommodating the kirschner wire. The kirschner wire guide 3 is provided with a plurality of kirschner wire accommodating cavities, the plurality of kirschner wire accommodating cavities are convenient for standby in operation, and the needle placement position of the kirschner wire 31 can be adjusted by changing different kirschner wires under the condition of not adjusting the length adjusting rod 22, so that the adjustment time in operation is reduced. In operation, the kirschner wire 31 is passed through the kirschner wire guide 3, and the kirschner wire 31 is placed into the body for stapling. In the initial state, the sleeve 1 and the kirschner wire guide 3 are on the same plane, the axis extending direction of the kirschner wire guide 3 is parallel to the axis extending direction of the positioning rod 41, so that the position of the needle can be conveniently determined according to the plane position of the instrument before operation, the accuracy of needle placement is improved, and the adjustment in operation is facilitated.

In the pelvic nail apparatus provided in the embodiment of the present application, as shown in fig. 5, the pelvic attaching portion 42 includes an attaching surface 421, and a plurality of retention holes 422 are provided on the pelvic attaching portion 42. Before operation, the pelvis is reconstructed in three-dimensional software, and a personalized attaching surface 421 attached to the surface of the pelvis is designed according to the direction and the position of the nail, and is used for attaching to the pelvis of a patient to play a role in positioning. The attaching surface 421 further comprises two retention holes 422, and two kirschner wires are driven into the retention holes 422 during operation to fix the attaching surface of the guide plate. The positioning rod 41 and the pelvis attachment portion 42 are 3D printed together before surgery.

Among the pelvis nail instrument that this application embodiment provided, adopt individualized attached face and nail instrument matched with mode to use, can plan to put the nail before the art, design individualized attached face, match different pelvis and put the nail condition, can adjust length and angle at any time in the art again and accomplish the needle process of putting, and the pelvis nail instrument of this application can recycle, reduces the time of art planning and baffle production, and application scope is extensive.

The use process of the pelvis nail placing instrument is as shown in fig. 5:

1. before operation, the pelvis is reconstructed in three-dimensional software, the instrument is simulated and placed, the whole instrument rotates around the axis direction of the sliding rod 22, and the positioning rod 41 and the attaching surface 421 are designed into an integrated model for 3D printing. The extending direction of the axis of the kirschner wire guide 3 is parallel to the extending direction of the axis of the positioning rod 41. The length and angle of the instrument are planned according to different pelvis nail placement conditions.

2. In operation, the attachment surface 421 is attached to a position corresponding to the pelvis of the patient, and the k-wire 31 is fixed through the two retention holes 422 formed in the attachment surface 421.

3. The sleeve 1 is sleeved on the positioning rod 41, the sliding block 12 in the sleeve 1 slides along the sliding groove 411 of the positioning rod 41, and the sleeve 1 and the positioning rod 41 are fixed through the sleeve fixing piece 11 after the sliding block is slid to a proper position.

4. The length adjustment lever 22 is adjusted to a scale at the time of planning, and the angle adjustment unit 23 is set to an initial position.

5. According to the actual requirement in the operation, the length of the length adjusting rod 22 and the angle of the angle adjusting part 23 are adjusted, the length adjusting rod is fixed by the length fixing piece 21 after being adjusted to a proper position, and the angle adjusting part 23 is fixed by the angle fixing piece 24.

6. After the length and the angle are fixed, the Kirschner wire 31 is guided to be driven into the pelvis by the Kirschner wire guide 3, then the Kirschner wire is pulled out, a nail placing hole is reserved on the pelvis, and then a nail is placed in the nail placing hole, so that the nail placing operation is realized in the pelvis, and the operation is completed.

To sum up, in the pelvic stapling instrument of the present application:

In conclusion, the method and the device effectively overcome various defects in the prior art and have high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles of the present application and their effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those of ordinary skill in the art without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications and variations which may be accomplished by persons skilled in the art without departing from the spirit and technical spirit of the disclosure be covered by the claims of this application.

Claims

1. The pelvis nail placing instrument is characterized by comprising a sleeve (1), an adjusting component (2) and a Kirschner wire guide (3) which are connected in sequence, and further comprising a positioning component (4); the positioning assembly comprises a positioning rod (41) and a pelvis attaching part (42) which are connected, and the positioning rod (41) is sleeved in the sleeve (1); the adjusting assembly (2) comprises a length adjusting rod (22) and an angle adjusting part (23) which are connected, the length adjusting rod (22) is connected with the sleeve (1), and the angle adjusting part (23) is connected with the Kirschner wire guide (3).

2. The pelvis screw setting device according to claim 1, characterized in that the positioning rod (41) is provided with a chute (411), the sleeve (1) is provided with a slide block (12), and the slide block (12) can slide relative to the chute (411).

3. The pelvic stapling instrument according to claim 2, wherein the chute (411) comprises a plurality of sub-chutes, and the slider (12) comprises a plurality of sub-sliders in one-to-one correspondence with the sub-chutes.

4. The pelvic stapling instrument according to claim 1, further comprising a sleeve mount (11) for retaining the sleeve (1) and the positioning rod (41).

5. The pelvic stapling instrument according to claim 1, wherein the length adjustment lever (22) comprises a fixed lever (221) and a sliding lever (222), the sliding lever (222) being slidable relative to the fixed lever (221), the fixed lever (221) being connected to the sleeve (1), the sliding lever (222) being connected to the angle adjustment portion (23); the angle adjusting part (23) is provided with a sliding rod accommodating cavity for accommodating part of the sliding rod (222).

6. The pelvis nail placing instrument according to claim 1, characterized in that the length adjusting rod (22) and the angle adjusting part (23) are respectively provided with graduations; the length adjusting range of the length adjusting rod (22) is-10 mm; the angle adjusting range of the angle adjusting part (23) is-60 degrees to 60 degrees.

7. The pelvic stapling instrument according to claim 5, further comprising a length fixing member (21) and an angle fixing member (24), the length fixing member (21) being configured to fix the fixing lever (221) and the sliding lever (222), the angle fixing member (24) being configured to fix the angle adjusting portion (23) and the sliding lever (222).

8. The pelvic stapling instrument according to claim 1, further comprising a k-wire (32), wherein the k-wire guide (3) is provided with a k-wire receiving cavity for receiving the k-wire (32).

9. The pelvic stapling instrument according to claim 8, wherein a plurality of k-wire receiving cavities are provided on the k-wire guide (3).

10. The pelvic stapling instrument according to claim 1, wherein in an initial state, the sleeve (1) and the kirschner wire guide (3) are in the same plane, and an axis extending direction of the kirschner wire guide (3) is parallel to an axis extending direction of the positioning rod (41);

and/or, the pelvis applying part (42) comprises an applying surface (421);

and/or, a plurality of retention holes (422) are arranged on the pelvis attaching part (42).