Center guide positioning clamp

Abstract

The utility model belongs to medical instruments, and particularly relates to a center guiding positioning clamp which comprises a first clamp body and a second clamp body, the first clamp body and the second clamp body are hinged, a first clamp mouth and a first handle are formed at the front end and the rear end of the first clamp body respectively, and a second clamp mouth and a second handle are formed at the front end and the rear end of the second clamp body respectively. The first plier mouth corresponds to the second plier mouth in position, a clamping position is formed between the first plier mouth and the second plier mouth, an installation part is arranged at the hinged position of the first plier body and the second plier body, and a drill bit guiding part is arranged on the installation part, located between the first plier mouth and the second plier mouth and corresponds to the middle position of the clamping position. According to the positioning clamp, the drill bit guiding piece is always located between the first clamp mouth and the second clamp mouth and corresponds to the middle position of the clamping position, it can be guaranteed that the drill bit guiding piece always guides external drilling equipment to the bone center in the middle position of the clamping position, the one-time drilling success rate can be increased, and the drilling frequency can be reduced; the operation time is saved; and the infection risk is reduced.

Description

Technical Field

[0001] The utility model belongs to medical equipment, in particular to a positioning forceps. Background Art

[0002] In some orthopedic surgeries, it is often necessary to drill a hole in the center of the bone to create a bone tunnel. For example, when drilling a hole in some narrow bones (such as the coracoid process, metacarpal bone, etc.) to create a bone tunnel, the bone tunnel must be in the center. Once the drilling position deviates from the center, it may cause the bone cortex on one side of the bone to completely break, resulting in failure of the bone tunnel production. In the prior art, there is a lack of positioning clamps that can stabilize the drill guide structure in the center.

[0003] For example, a prior patent disclosed a fracture reduction drilling guide forceps (application number CN202022067095.2), including a first jaw and a second jaw, one side end face of the first jaw is fixedly connected to a first jaw rod, one side end face of the second jaw is fixedly connected to a second jaw rod, the bend of the first jaw rod is rotatably connected to the bend of the second jaw rod, the end of the first jaw rod is fixedly connected to a first finger sleeve, and the end of the second jaw rod is fixedly connected to a second finger sleeve. In this guide forceps, although the position of the guide block can be manually adjusted by medical staff, the accuracy is still insufficient, so that the guide forceps cannot ensure that the guide block is stably centered, and the manual adjustment of the centering process is very troublesome. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a center-guided positioning forceps, which can provide accurate positioning for making bone tunnels, improve the success rate of one-time drilling, reduce the number of drilling times, thereby saving operation time and reducing the risk of infection.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows.

[0006] A center-guided positioning pliers, which includes a first pliers body and a second pliers body, wherein the first pliers body and the second pliers body are hinged, and a first pliers mouth and a first handle are formed at the front and rear ends of the first pliers body, and a second pliers mouth and a second handle are formed at the front and rear ends of the second pliers body; the first pliers mouth and the second pliers mouth correspond to each other in position, and a clamping position is formed therebetween, and the invention is characterized in that a mounting part is provided at the hinge of the first pliers body and the second pliers body, a drill guide is provided on the mounting part, and the drill guide is located between the first pliers mouth and the second pliers mouth, and corresponds to the middle position of the clamping position.

[0007] In the positioning forceps, the drill guide is always located between the first jaw and the second jaw, corresponding to the middle position of the clamping position, which can ensure that the drill guide always guides the external drilling equipment to the bone center at the middle position of the clamping position, thereby improving the success rate of drilling in one time, reducing the number of drilling times, saving operation time and reducing the risk of infection.

[0008] Furthermore, an adjustment guide is provided at the hinge of the first pliers body and the second pliers body, the drill guide is fixedly provided at the front end of the mounting member, an adjustment slot is provided at the rear end of the mounting member, a sliding limiter is provided at the upper end of the adjustment guide for limiting the rotation of the mounting member relative to the adjustment guide, the mounting member is arranged on the sliding limiter so as to be movable forward and backward through the adjustment slot, a locking member for locking the position of the mounting member is also provided on the sliding limiter, and the locking member corresponds to the rear end of the mounting member. Based on the cooperation of the sliding limiter and the adjustment slot, the drill guide can be adjusted forward and backward in the middle of the clamping position, and can be locked by the locking member after the adjustment is completed.

[0009] Furthermore, a bearing part is fixed at the connection between the adjustment guide and the sliding limit part, the sliding limit part passes through the adjustment slide slot so that the lower side of the rear end of the mounting part can be movably abutted against the bearing part, and the locking part is movably arranged on the sliding limit part to correspond to the upper side of the rear end of the mounting part. After the front and rear position adjustment of the mounting part is completed, the locking part can be moved so that the locking part and the bearing part can be respectively abutted against the upper and lower sides of the rear end of the mounting part to lock the mounting part.

[0010] Furthermore, the first pliers body and the second pliers body are hinged through an adjustment guide, a balance guide is provided on the adjustment guide, a balance guide slot is provided at the rear end of the balance guide, a balance slider is movably provided in the balance guide slot, a first balance bar is hingedly provided on the first handle, a second balance bar is hingedly provided on the second handle, and both the first balance bar and the second balance bar are hingedly provided with the balance slider. The arrangement of the first balance bar and the second balance bar can ensure that when the first handle and the second handle are opened and closed, the balance guide is always located at an extended position in the middle of the clamping position.

[0011] Furthermore, a first hidden groove is provided in the first handle, and the first balance bar is hingedly provided in the first hidden groove; a second hidden groove is provided in the second handle, and the second balance bar is hingedly provided in the second hidden groove. The provision of the first hidden groove and the second hidden groove can prevent the first balance bar and the second balance bar from protruding from the positioning clamp, and can also make the positioning clamp occupy a smaller space.

[0012] Furthermore, a first rack is disposed on the first handle, and a second rack is disposed on the second handle, and the first rack is meshed with the second rack.

[0013] Furthermore, finger sleeves are provided at the rear ends of the first handle and the second handle.

[0014] Furthermore, the front end of the first jaw is bent obliquely downward to form a first clamping portion, and the front end of the second jaw is bent obliquely downward to form a second clamping portion, and the first clamping portion and the second clamping portion correspond to each other; the front end of the drill guide is provided with a guide channel inclined obliquely downward, and the guide channel corresponds to the middle position between the first clamping portion and the second clamping portion.

[0015] The beneficial effect of the utility model is that, in the positioning pliers, the drill guide is always located between the first jaw and the second jaw, corresponding to the middle position of the clamping position, which can ensure that the drill guide always guides the external drilling device to the bone center at the middle position of the clamping position, thereby improving the success rate of drilling in one time, reducing the number of drilling times, saving operation time and reducing the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is an exploded view of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] See also Figure 1-2 The present embodiment provides a center-guided positioning pliers, which includes a first pliers body 1 and a second pliers body 2. The first pliers body 1 and the second pliers body 2 are hinged, and the first pliers body 1 is respectively formed with a first pliers mouth 11 and a first handle 12 at the front and rear ends, and the second pliers body 2 is respectively formed with a second pliers mouth 21 and a second handle 22 at the front and rear ends; the first pliers mouth 11 and the second pliers mouth 21 correspond in position, and a clamping position 3 is formed therebetween, and it is characterized in that a mounting member 4 is provided at the hinge of the first pliers body 1 and the second pliers body 2, and a drill guide member 5 is provided on the mounting member 4, and the drill guide member 5 is located between the first pliers mouth 11 and the second pliers mouth 21, and corresponds to the middle position of the clamping position 3.

[0020] In this embodiment, an adjustment guide 6 is provided at the hinge of the first pliers body 1 and the second pliers body 2, the drill guide 5 is fixedly arranged at the front end of the mounting member 4, and an adjustment slot 41 is arranged at the rear end of the mounting member 4. A sliding limit portion 61 is arranged at the upper end of the adjustment guide member 6 for limiting the rotation of the mounting member 4 relative to the adjustment guide member 6, and the mounting member 4 can be moved forward and backward through the adjustment slot 41 and is arranged on the sliding limit portion 61; specifically, the left and right sides of the sliding limit portion 61 are parallel, and the left and right sides of the adjustment slot 41 are parallel, and when the two slide in coordination, they can only slide forward and backward; a locking member 62 for locking the position of the mounting member is also arranged on the sliding limit portion 61, and the locking member 62 corresponds to the rear end of the mounting member 4.

[0021] In this embodiment, a bearing portion 63 is fixed at the connection between the adjustment guide member 6 and the sliding limit portion 61. The sliding limit portion 61 passes through the adjustment slide groove 41 so that the lower side of the rear end of the mounting member 4 can be movably supported on the bearing portion 63. The locking member 62 is movably arranged on the sliding limit portion 61 to correspond to the upper side of the rear end of the mounting member 4.

[0022] In this embodiment, the first pliers body 1 and the second pliers body 2 are hingedly connected by an adjusting guide member 6, a balancing guide member 7 is arranged on the adjusting guide member 6, a balancing guide groove 71 is arranged at the rear end of the balancing guide member 7, a balancing slider 72 is movably arranged in the balancing guide groove 71, a first balancing rod 121 is hingedly provided on the first handle 12, a second balancing rod 221 is hingedly provided on the second handle 22, and both the first balancing rod 121 and the second balancing rod 221 are hingedly connected to the balancing slider 72.

[0023] In this embodiment, a first hidden groove 122 is provided in the first handle 12 , and the first balance rod 121 is hingedly provided in the first hidden groove 122 ; a second hidden groove 222 is provided in the second handle 22 , and the second balance rod 221 is hingedly provided in the second hidden groove 222 .

[0024] In this embodiment, a first rack 123 is disposed on the first handle 12 , and a second rack 223 is disposed on the second handle 22 . The first rack 123 meshes with the second rack 223 .

[0025] In this embodiment, finger sleeves 8 are provided at the rear ends of the first handle 12 and the second handle 22 .

[0026] In this embodiment, the front end of the first jaw 11 is bent obliquely downward to form a first clamping portion 111, and the front end of the second jaw 21 is bent obliquely downward to form a second clamping portion 211, and the first clamping portion 111 and the second clamping portion 211 correspond to each other; the front end of the drill guide 5 is provided with a guide channel 51 inclined obliquely downward, and the guide channel 51 corresponds to the middle position between the first clamping portion 111 and the second clamping portion 211.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A center-guided positioning pliers, the positioning pliers comprising a first pliers body and a second pliers body, the first pliers body and the second pliers body are hinged, the first pliers body is respectively formed with a first pliers mouth and a first handle at the front and rear ends, and the second pliers body is respectively formed with a second pliers mouth and a second handle at the front and rear ends; the first pliers mouth and the second pliers mouth are corresponding in position, and a clamping position is formed between the two, characterized in that: A mounting piece is provided at the hinged joint of the first pliers body and the second pliers body, a drill guide is provided on the mounting piece, and the drill guide is located between the first pliers mouth and the second pliers mouth and corresponds to the middle position of the clamping position.

2. A center guide positioning pliers according to claim 1, characterized in that: An adjustment guide is provided at the hinge of the first clamp body and the second clamp body, the drill guide is fixedly arranged at the front end of the mounting member, an adjustment slot is arranged at the rear end of the mounting member, a sliding limit portion is arranged at the upper end of the adjustment guide member for limiting the rotation of the mounting member relative to the adjustment guide member, the mounting member is arranged on the sliding limit portion so as to be movable forward and backward through the adjustment slot, a locking member for locking the position of the mounting member is also arranged on the sliding limit portion, and the locking member corresponds to the rear end of the mounting member.

3. A center guide positioning pliers according to claim 2, characterized in that: A bearing part is fixed at the connection between the adjustment guide and the sliding limit part, and the sliding limit part passes through the adjustment slide groove so that the lower side of the rear end of the mounting part can be movably supported on the bearing part, and the locking part is movably arranged on the sliding limit part to correspond to the upper side of the rear end of the mounting part.

4. A center guide positioning pliers according to claim 3, characterized in that: The first pliers body and the second pliers body are hingedly connected by an adjusting guide member, a balancing guide member is arranged on the adjusting guide member, a balancing guide slot is arranged at the rear end of the balancing guide member, a balancing slider is movably arranged in the balancing guide slot, a first balancing rod is hingedly provided on the first handle, a second balancing rod is hingedly provided on the second handle, and both the first balancing rod and the second balancing rod are hingedly connected to the balancing slider.

5. A center guide positioning pliers according to claim 4, characterized in that: A first hidden groove is arranged in the first handle, and the first balance pole is hingedly arranged in the first hidden groove; a second hidden groove is arranged in the second handle, and the second balance pole is hingedly arranged in the second hidden groove.

6. A center guide positioning pliers according to any one of claims 1 to 5, characterized in that: The first handle is provided with a first rack, the second handle is provided with a second rack, and the first rack is meshed with the second rack.

7. A center guide positioning pliers according to any one of claims 1 to 5, characterized in that: Finger sleeves are provided at the rear ends of the first handle and the second handle.

8. A center guide positioning pliers according to any one of claims 1 to 5, characterized in that: The front end of the first jaw is bent obliquely downward to form a first clamping portion, and the front end of the second jaw is bent obliquely downward to form a second clamping portion, and the first clamping portion and the second clamping portion correspond to each other; the front end of the drill guide is provided with a guide channel inclined obliquely downward, and the guide channel corresponds to the middle position between the first clamping portion and the second clamping portion.

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