Needle clamping block for orthopedics department

Abstract

The utility model discloses a needle clamping block for orthopedics, which relates to the field of medical instruments and comprises a first needle clamping block, a second needle clamping block, a spring and a connecting rod. Two ends of the connecting rod are respectively a threaded end and a round hole end; an external thread is arranged at the threaded end; a structural block is arranged at the end of the circular hole; the first needle clamping block comprises a first through hole; the structural block is larger than the first through hole in size; the second needle clamping block comprises a second through hole; an internal thread is arranged in the second through hole; the internal thread of the second needle clamping block is screwed on the external thread of the threaded end; the first needle clamping block, the spring and the second needle clamping block sequentially sleeve the connecting rod from top to bottom; the structural block is positioned above the first needle clamping block; the external thread of the threaded end is in threaded fit with the internal thread of the second through hole. According to the needle clamping block for the orthopedics department, the problem that in the prior art, a needle clamping block is tedious in use process is solved, and an operator can use the needle clamping block conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a needle clamping block for orthopedics. BACKGROUND

[0002] At the two ends of the fracture site, close to the injury area and outside the injury area, the needle is pierced into the soft tissue and bone through the skin, and then the needle is fixed on the bracket outside the body. The bracket exerts force on the bone needle, and the bone needle exerts force on the bone. Then, using the balance condition of force, the bone ends are fixed, pressed or pulled, so as to achieve the treatment purpose of orthopedic deformity correction and fracture reduction.

[0003] In the prior art, a bracket for fixing the bone needle is provided in Chinese Patent Application No. 202220800941.3, which describes the specific structure and its working principle.

[0004] When using the device of the above-mentioned comparative document, a wrench is needed. The first locking nut needs to be tightened on the first screw rod by the wrench, and the second locking nut needs to be locked on the second screw rod by the wrench. Since the screw rod, the upper needle clamping block and the lower needle clamping block are three independent structures, the upper needle clamping block and the lower needle clamping block are sleeved on the screw rod, and the first locking nut and the second locking nut respectively exert opposite forces on the upper needle clamping block and the lower needle clamping block for fixation. In specific operation, the operator first needs to ensure the stability of the upper and lower needle clamping blocks to avoid the rotation of the upper and lower needle clamping blocks relative to the axis of the screw rod (rotation will cause the position of the bone needle to change), so the operator needs to fix the upper and lower needle clamping blocks with his hands. Secondly, the operator cannot tighten one nut alone, because this may cause the rotation of the other nut (the rotation of one nut drives the rotation of the screw rod, and the rotation of the screw rod drives the rotation of the other nut). Therefore, the operator needs to control two wrenches to rotate the first and second locking nuts at the same time, and an operator only has two hands, so two people need to cooperate in the specific operation, which is troublesome.

[0005] In addition, when the nut is tightened on the screw rod, the number of rotations of the nut relative to the screw rod is not fixed, so the operator may need to repeatedly position and clamp the nut, and then rotate the nut, which further complicates the operation process. UTILITY MODEL CONTENTS

[0006] In view of the above technical problems, the needle clamping block for orthopedics provided by the utility model can be conveniently used by the operator.

[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0008] The utility model provides an orthopedics is with clamping needle piece, including first clamping needle piece, second clamping needle piece, spring and connecting rod, the both ends of connecting rod are threaded end and round hole end respectively, threaded end department is provided with external thread, round hole end department is provided with structure block, first clamping needle piece includes first perforation, the size of structure block is greater than the size of first perforation, second clamping needle piece includes second perforation, be provided with internal thread in second perforation, the internal thread of second clamping needle piece is screwed on the external thread of threaded end, first clamping needle piece, spring and second clamping needle piece are in proper order from top to bottom and are set on connecting rod, structure block is above first clamping needle piece, and the external thread of threaded end is screwed with the internal thread of second perforation.

[0009] The utility model provides an orthopedics is with clamping needle piece, preferably, still include cylindrical knob, structure block is columnar, the high extension direction of columnar structure of structure block is horizontal, the axial direction of threaded end of connecting rod is vertical, be provided with first abutting surface and second abutting surface that mutually parallel on the knob, the distance between first abutting surface, second abutting surface is equal with the columnar high length of structure block, first abutting surface and second abutting surface abut respectively the upper and lower bottom surface of columnar of structure block, the cylindrical side surface of knob is provided with antiskid stripe.

[0010] The utility model provides an orthopedics is with clamping needle piece, preferably, still include camshaft, structure block can compare with the sliding of knob, the sliding direction of structure block compared with the knob is parallel to first abutting surface, the sliding direction of structure block compared with the knob is vertical, the columnar bottom surface of structure block is seted up with round hole, the hole axle of round hole is perpendicular to the columnar bottom surface of structure block, be seted up with second round hole on the knob, camshaft can rotate and pass through round hole with second round hole, camshaft includes first circular axle part, cam part and second circular axle part, the axle diameter size of first circular axle part is equal with second round hole diameter, the diameter size of second circular axle part is equal with second round hole diameter, first circular axle part, second circular axle part can rotate and be fixed in second round hole, cam part includes convex end, the distance of convex end to first circular axle part axle line is longer than the radius of round hole.

[0011] The utility model provides an orthopedics is with clamping needle piece, preferably, the end of camshaft is provided with internal hexagon recess.

[0012] The utility model provides a bone department is with pin block, preferably, first pin block includes first upper pin block and first lower pin block, second pin block includes second upper pin block and second lower pin block, the second lower pin block the second perforation is provided with the internal thread, the connecting rod is from top to bottom through the first perforation, spring and the second perforation, first upper pin block is in first lower pin block top, first lower pin block is in second upper pin block top, second upper pin block is in second lower pin block top, first lower pin block below is provided with first spring accommodating groove, second upper pin block top is provided with second spring accommodating groove, the upper end of spring is tightly pressed in first spring accommodating groove groove bottom, the lower end of spring is tightly pressed in second spring accommodating groove groove bottom.

[0013] The utility model provides a bone department is with pin block, preferably, first lower pin block lower end surface and the upper end surface of second upper pin block all are provided with end surface tooth.

[0014] The above technical scheme has the following advantages or beneficial effects:

[0015] The utility model discloses a bone department is with pin block relates to medical instrument field, and includes first pin block, second pin block, spring and connecting rod, the both ends of connecting rod are threaded end and round hole end respectively, the threaded end is provided with external thread, the round hole end is provided with structure block, first pin block includes first perforation, the size of structure block is greater than the size of first perforation, second pin block includes second perforation, the internal thread is provided in second perforation, the internal thread of second pin block is screwed on the external thread of threaded end, first pin block, spring and second pin block are in proper order from top to bottom and are set on connecting rod, structure block is above first pin block, the external thread of threaded end and the internal thread of second perforation are screwed together. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model and its features, shape and advantages will become more obvious through reading the detailed description of the following drawings to non -limitative embodiment. Same mark indicates same part in all drawings. The drawing is not drawn according to proportion, and the emphasis is in showing the main idea of the utility model.

[0017] Figure 1 It is the overall structure schematic diagram of the bone department is with pin block provided by the utility model embodiment 1.

[0018] Figure 2 It is the structure schematic diagram of the bone department is with pin block provided by the utility model embodiment 1 after removing knob.

[0019] Figure 3 is a connecting rod structure schematic view of the pin clamping block provided by the embodiment 1 of the utility model.

[0020] Figure 4 is a first pin clamping block and second pin clamping block position relation schematic view of the pin clamping block provided by the embodiment 1 of the utility model.

[0021] Figure 5 is a first pin clamping block structure schematic view of the pin clamping block provided by the embodiment 1 of the utility model.

[0022] Figure 6 is a second pin clamping block structure schematic view of the pin clamping block provided by the embodiment 1 of the utility model.

[0023] Figure 7 is a spring and first pin clamping block position relation schematic view of the pin clamping block provided by the embodiment 1 of the utility model.

[0024] Figure 8 is a knob structure schematic view of the pin clamping block provided by the embodiment 1 of the utility model. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. It should be noted that the terms used in the utility model are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application.

[0026] The technical solutions in the embodiments of the utility model will be described in detail below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Therefore, the detailed description of the embodiments of the utility model provided in the following drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model.

[0027] Embodiment 1:

[0028] The pin clamping block provided by the embodiment 1 of the utility model, such as Figures 1 to 8As shown, it comprises a first clamping needle block 1, a second clamping needle block 2, a spring 3 and a connecting rod 4; both ends of the connecting rod 4 are a threaded end 41 and a round hole end 42 respectively; an external thread is arranged at the threaded end 41; a structural block 421 is arranged at the round hole end 42; the first clamping needle block 1 comprises a first perforation 11; the size of the structural block 421 is greater than that of the first perforation 11; the second clamping needle block 2 comprises a second perforation 21; an internal thread is arranged in the second perforation 21; the internal thread of the second clamping needle block 2 is screwed on the external thread of the threaded end 41; the first clamping needle block 1, the spring 3 and the second clamping needle block 2 are sequentially sleeved on the connecting rod 4 from top to bottom; the structural block 421 is above the first clamping needle block 1; the external thread of the threaded end 41 is in threaded cooperation with the internal thread of the second perforation 21.

[0029] The specific structure and use method of the clamping needle block for orthopedics are prior art, which has been disclosed in a bone external fixation needle rod clamping device disclosed in Chinese Patent Application No. 202220800941.3. In use, the two bone nails are first inserted into the human body, and then the first clamping needle block 1 and the second clamping needle block 2 are used to fix the two bone nails. In specific operation, the operator pinches the structural block 421, controls the connecting rod 4 to pass through the first perforation 11, the spring 3 and the second perforation 21 in sequence, and makes the threaded end 41 cooperate with the internal thread in the second perforation 21, and then rotates the connecting rod 4 to continuously tighten the threaded end 41 of the connecting rod 4 and the internal thread of the second clamping needle block 2, applies a pressure to the first clamping needle block 1 towards the second clamping needle block 2 through the structural block 421 of the round hole end 42 of the connecting rod 4, so that the spring 3 is compressed, and then limits the second clamping needle block 2 through the internal thread of the second clamping needle block 2 and the spring 3 (in the extension direction of the connecting rod 4) and limits the first clamping needle block 1 through the spring 3 and the structural block 421 (in the extension direction of the connecting rod 4), so as to limit and fix the bone nails on the first clamping needle block 1 and the second clamping needle block 2. Compared with the prior art, two nuts are needed to apply pressure to two clamping needle blocks, so two people must cooperate during use (one person holds the clamping needle block to avoid rotation, and the other person controls the wrench to rotate the two nuts at the same time). The structure provided in the embodiment only needs to be held by one hand of the operator and the connecting rod 4 is rotated by the other hand, so that the threaded end 41 of the connecting rod 4 is tightened on the second clamping needle block 2, so as to limit the first clamping needle block 1 and the second clamping needle block 2. Therefore, the use method of the embodiment is simpler.

[0030] The clamping needle block for orthopedics provided in the embodiment 1 of the utility model solves the problem of complicated use process in the prior art, and can be conveniently used by the operator.

[0031] In order to facilitate the operator to rotate the connecting rod 4, in the embodiment, a cylindrical knob 5 is further included; the structural block 421 is columnar; the extending direction of the height of the columnar structure of the structural block 421 (in the embodiment, the columnar structural block 421 is preferably used, and the height of the columnar structure is the height of the column of the structural block 421) is horizontal; the axis direction of the threaded end of the connecting rod 4 is vertical; the first abutting surface 51 and the second abutting surface 52 which are parallel to each other are arranged on the knob 5; the distance between the first abutting surface 51 and the second abutting surface 52 is equal to the length of the height of the columnar structure of the structural block 421; the first abutting surface 51 and the second abutting surface 52 abut the upper and lower bottom surfaces of the columnar structure of the structural block 421, respectively; the cylindrical side surface of the knob 5 is provided with anti-skid stripes 53. The operator holds two pin blocks with one hand, and holds the cylindrical side surface of the knob 5 with the other hand, increases the friction between the hand and the knob 5 through the anti-skid stripes 53, and rotates the knob 5. During the rotation of the knob, the structural block 421 is also rotated following the knob because it is limited between the first abutting surface 51 and the second abutting surface 52 (the connecting rod 4 is a round shaft, and the axis of the connecting rod 4 is coaxial with the cylindrical axis of the knob 5). Since the knob 5 expands the horizontal dimension of the structural block 421, the surface of the knob 5 is horizontally farther away from the axis of the connecting rod 4 than the surface of the structural block 421, so that the operator can rotate the connecting rod 4 with a larger force arm (compared with holding the surface of the structural block 421) by holding the surface of the knob 5, thereby saving labor and facilitating the operator to rotate the connecting rod 4.

[0032] In the prior art, it is difficult to ensure both stable connection and convenient disassembly. If the rotation between the nut and the screw rod is very tight in the prior art, the friction between the threads will be large, and the operator needs to overcome greater friction to separate the nut from the screw rod when rotating the nut in the opposite direction. If the rotation between the nut and the screw rod is not tight, the clamping needle block may be loose, and the fixed position of the clamping needle block is unstable. To solve this problem, as an optimal solution, the camshaft 6 is further included in the embodiment. The structural block 421 can slide relative to the knob 5. The sliding direction of the structural block 421 relative to the knob 5 is parallel to the first abutting surface 51. The sliding direction of the structural block 421 relative to the knob 5 is vertical. A circular hole 4211 is formed in the cylindrical bottom surface of the structural block 421. The hole axis of the circular hole 4211 is perpendicular to the cylindrical bottom surface of the structural block 421. A second circular hole 54 is formed in the knob 5. The camshaft 6 can rotate through the circular hole 4211 and the second circular hole 54. The camshaft 6 includes a (cylindrical) first circular shaft part 61, a cam part 62, and a (cylindrical) second circular shaft part 63. The shaft diameter of the first circular shaft part 61 is equal to the diameter of the second circular hole 54. The diameter of the second circular shaft part 63 is equal to the diameter of the second circular hole 54. The first circular shaft part 61 and the second circular shaft part 63 can be rotatably fixed in the second circular hole 54. The cam part 62 includes a convex end. The distance from the convex end to the axis of the first circular shaft part 61 is longer than the radius of the circular hole 4211.In the process of tightening the connecting rod 4, the convex end of the cam portion 62 of the cam shaft 6 is directed towards the threaded end of the connecting rod 4. When the operator turns the knob 5 to the point where it is difficult to turn, the convex end of the cam portion can be turned to face away from the threaded end by turning the cam shaft 6. At this time, the connecting rod 4 is raised relative to the knob 5 (the axis of the convex end is longer than the radius of the circular hole 4211, the position of the second circular hole 54 does not change, the axis of the cam shaft 6 does not change, when the convex end is directed downward, the convex end makes the axis of the circular hole 4211 lower than the axis of the second circular hole 54, thereby causing the connecting rod 4 to move downward relative to the knob 5; when the convex end is directed upward, the convex end makes the axis of the circular hole 4211 higher than the axis of the second circular hole 54, thereby causing the connecting rod 4 to move upward relative to the knob 5, in the reference frame of the fixed knob 5, the connecting rod 4 is raised relative to the knob 5, the second clamping block 2 fixed on the connecting rod 4 is vertically raised, thereby compressing the spring 3 between the first clamping block 1 and the second clamping block 2, so that the spring 3 has greater elastic potential energy, and the first clamping block 1 and the second clamping block 2 are subjected to greater pressure), thereby stably fixing the first clamping block 1 and the second clamping block 2; when it is necessary to separate the first clamping block 1 and the second clamping block 2, the connecting rod 4 can be moved downward relative to the knob 5 by turning the cam shaft 6, the knob 5 and the second clamping block 2 have a greater distance therebetween, thereby causing the spring 3 to have less elastic potential energy, so that the spring 3 exerts less pressure on the second clamping block 2, thereby reducing the friction between the external threads of the connecting rod 4 and the internal threads of the second clamping block 2, thereby facilitating the operator to turn the knob 5.

[0033] To facilitate the rotation of the cam shaft 6, in this embodiment, the end of the cam shaft 6 is provided with an internal hexagonal groove 64. The operator can use a hexagonal wrench to extend the force arm, thereby more easily rotating the cam shaft 6.

[0034] As a preferred method, in the embodiment, the first clamping needle block 1 comprises a first upper clamping needle block 12 and a first lower clamping needle block 13; the second clamping needle block 2 comprises a second upper clamping needle block 22 and a second lower clamping needle block 23; the second lower clamping needle block 23 is provided with an internal thread in the second through hole 21; the connecting rod 4 passes through the first through hole 11, the spring 3 and the second through hole 21 from top to bottom; the first upper clamping needle block 12 is above the first lower clamping needle block 13; the first lower clamping needle block 13 is above the second upper clamping needle block 22; the second upper clamping needle block 22 is above the second lower clamping needle block 23; the first lower clamping needle block 13 is provided with a first spring accommodating groove 131 below; the second upper clamping needle block 22 is provided with a second spring accommodating groove 221 above; the upper end of the spring 3 is tightly pressed against the groove bottom of the first spring accommodating groove 131; the lower end of the spring 3 is tightly pressed against the groove bottom of the second spring accommodating groove 221. The specific structure of the first clamping needle block 1 and the second clamping needle block 2 is not described in detail here, the first upper clamping needle block 12 and the first lower clamping needle block 13 are separated from each other so that the bone needle can be in interference fit between the first upper clamping needle block 12 and the first lower clamping needle block 13, and the bone needle is prevented from loosening; the second upper clamping needle block 22 and the second lower clamping needle block 23 are the same; the first spring accommodating groove 131 and the second spring accommodating groove 221 are used for limiting the contact position of the spring 3 with the first clamping needle block 1 and the second clamping needle block 2, so that the spring and the first clamping needle block 1 and the second clamping needle block 2 are prevented from relatively sliding and affecting the clamping effect.

[0035] As a preferred scheme, in the embodiment, the lower end face of the first lower clamping needle block 13 and the upper end face of the second upper clamping needle block 22 are both provided with an end face tooth. The end face tooth can ensure that the first clamping needle block 1 and the second clamping needle block 2 do not rotate randomly after the angle between the bone needles is determined.

[0036] In summary, the utility model discloses a clamping needle block for orthopedics relates to medical instrument field, including first clamping needle block, second clamping needle block, spring and connecting rod, the both ends of connecting rod are threaded end and round hole end respectively, threaded end is provided with external thread, round hole end is provided with structure block, first clamping needle block includes first through -hole, the size of structure block is greater than the size of first through -hole, second clamping needle block includes second through -hole, second through -hole is provided with internal thread, the internal thread of second clamping needle block is screwed on the external thread of threaded end, first clamping needle block, spring and second clamping needle block are in proper order from top to bottom and are set on connecting rod, structure block is above first clamping needle block, the external thread of threaded end is screwed with the internal thread of second through -hole. The clamping needle block for orthopedics provided by the utility model solves the problem that the use process of the prior art clamping needle block is complicated, and can facilitate the operation personnel to use.

[0037] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A pin clip for orthopedic use, characterized in that, The first clamping needle block, the second clamping needle block, the spring and the connecting rod are included. The two ends of the connecting rod are threaded ends and round hole ends respectively. The threaded end is provided with external threads, and the round hole end is provided with a structure block. The first clamping needle block includes a first perforation, and the size of the structure block is greater than that of the first perforation. The second clamping needle block includes a second perforation, and the second perforation is provided with internal threads. The first clamping needle block, the spring and the second clamping needle block are sequentially sleeved on the connecting rod from top to bottom, the structure block is above the first clamping needle block, and the external threads of the threaded end are threadedly connected with the internal threads of the second perforation.

2. The pin block of claim 1, wherein, A cylindrical knob is further included. The structure block is in a columnar shape, the extending direction of the columnar structure of the structure block is horizontal, the axis direction of the threaded end of the connecting rod is vertical, and the first abutting surface and the second abutting surface on the knob are parallel to each other. The distance between the first abutting surface and the second abutting surface is equal to the columnar height of the structure block. The first abutting surface and the second abutting surface abut the upper and lower bottom surfaces of the columnar structure block respectively. The cylindrical side surface of the knob is provided with anti-skid stripes. A camshaft is further included. The structure block can slide relative to the knob, the sliding direction of the structure block relative to the knob is parallel to the first abutting surface, and the sliding direction of the structure block relative to the knob is vertical.

3. The pin block of claim 2, wherein the pin block is configured to be used in orthopedic surgery. A round hole is formed in the columnar bottom surface of the structure block, and the hole axis of the round hole is perpendicular to the columnar bottom surface of the structure block. A second round hole is formed in the knob. The camshaft can rotate through the round hole and the second round hole. The camshaft includes a first circular shaft part, a cam part and a second circular shaft part. The diameter of the first circular shaft part is equal to the diameter of the second round hole, the diameter of the second circular shaft part is equal to the diameter of the second round hole, and the first circular shaft part and the second circular shaft part can be rotationally fixed in the second round hole. The cam part includes a convex end, and the distance from the convex end to the axis of the first circular shaft part is longer than the radius of the round hole. The end of the camshaft is provided with an internal hexagonal groove. The first clamping needle block includes a first upper clamping needle block and a first lower clamping needle block, and the second clamping needle block includes a second upper clamping needle block and a second lower clamping needle block.

4. The pin block of claim 3, wherein the pin block is configured to be used in orthopedic surgery. The internal threads are arranged in the second perforation of the second lower clamping needle block.

5. The pin block of claim 1, wherein the pin block is configured to be used in orthopedic surgery. The connecting rod passes through the first perforation, the spring and the second perforation from top to bottom, the first upper clamping needle block is above the first lower clamping needle block, the first lower clamping needle block is above the second upper clamping needle block, and the second upper clamping needle block is above the second lower clamping needle block. A first spring accommodating groove is formed below the first lower clamping needle block, a second spring accommodating groove is formed above the second upper clamping needle block, the upper end of the spring is tightly pressed against the groove bottom of the first spring accommodating groove, and the lower end of the spring is tightly pressed against the groove bottom of the second spring accommodating groove. The end surfaces of the first lower clamping needle block and the second upper clamping needle block are provided with end surface teeth. ​ 6. The pin block of claim 5, wherein the pin block is configured to be used in orthopedic surgery. ​

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