CN210843410U - Dentate protruding positioning needle sighting device - Google Patents

Abstract

A dentate protruding positioning needle collimator comprises a support sleeve and a collimator body, wherein the collimator body is inserted into the support sleeve and is fixed in the support sleeve through a fastening knob; the support sleeve includes sleeve pipe and connecting portion, the sheathed tube left end portion is equipped with the scarf, the sleeve pipe symmetry of scarf both sides is equipped with the location tooth, the below fixedly connected with operating handle of connecting portion, the right-hand member face of connecting portion is equipped with the sticking department, it has the locking groove to open on the sticking department, the collimator body is including aiming the cylinder, be fixed with the portion of gripping on aiming the cylinder, the left end fixedly connected with grafting portion of the portion of gripping, threaded connection has the fastening knob on the grafting portion, it has the location needle insertion channel of a plurality of parallels to open on aiming the cylinder. The sighting device is applied to anterior odontoid screw internal fixation, helps guide the positioning needle, enables the positioning needle to be inserted at the best position and at a proper angle in the process of being driven into the axis, prevents the positioning needle from being bent due to long operating distance, and improves the positioning accuracy of the positioning needle.

Description

Dentate protruding positioning needle sighting device

Technical Field

The utility model relates to the field of medical equipment, concretely relates to cusp locating pin sight.

Background

The dentate process fracture is a common type of upper cervical vertebra fracture, according to the classification method of Anderson-D' Alonzo and GrauerJN on the dentate process fracture, the IIB type and the shallow III type dentate process fracture are considered to be suitable for anterior dentition hollow lag screw internal fixation, the dentate process anterior screw internal fixation has obvious advantages compared with the posterior atlantoaxial fixation fusion, the movable function of the atlantoaxial joint is reserved, and the fracture part of the dentate process is instantly stabilized. Performing anterior screw internal fixation requires that the apophyseal fracture end of the preoperative patient must be reduced by traction, and that the transverse ligament injury condition be clear, which cannot be done if the transverse ligament is broken. The anterior odontoid screw internal fixation has high difficulty, high risk, high requirements on the technology and experience of an operator, the position of an operation incision is far away from the operation position, the operation can not be performed under direct vision, the positions of a positioning needle and a screw need to be determined by means of repeated perspective of a C-shaped arm X-ray machine in the operation, meanwhile, the neck anatomical structure is complex, the operation operable space is narrow, important organs and tissues of the neck of carotid artery, vertebral artery, superior laryngeal nerve and recurrent laryngeal nerve are easily damaged, the positioning needle is difficult to position in the operation process, the electric drill guides the positioning needle for a long distance in the process that the positioning needle passes through the dentate apophyseal fold line, the force and the speed are difficult to control, the positioning needle is easy to bend and inaccurate to position, even the positioning needle is broken, the spinal dura mater is punctured, and the blood supply around the dentate apophyseal fold line is easy to damage by repeated operation and adjustment of the angle and, the bone near the fracture end is damaged, the displacement and the rotation of the fracture far end can be aggravated, the operation time and the number of times of fluoroscopy of the C-shaped arm X-ray machine during the operation are increased, and the probability of the fracture disunion of the patient after the operation is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, a cusp locating pin sight has been designed, this sight is applied to in the preceding way dentate process screw internal fixation art, help guide locating pin, make the locating pin can be with best position and suitable angle needle insertion being squeezed into the axis vertebra in-process, make the locating pin not because operating distance is far away and the crooked phenomenon appears, increase the location accuracy of locating pin, it can reduce the operation time to use cusp locating pin sight simultaneously, reduce the use number of times of C type arm X line machine in the art.

In order to solve the above technical problem and achieve the above technical effect, the utility model discloses a following technical content realizes:

a dentate protruding positioning needle collimator is characterized by comprising a support sleeve and a collimator body, wherein the collimator body is inserted into the support sleeve and is fixed in the support sleeve through a fastening knob;

the support sleeve comprises a sleeve and a connecting part, the sleeve is fixedly connected with the connecting part, a baffle is arranged between the sleeve and the connecting part, an oblique cutting surface is arranged at the left end part of the sleeve, positioning teeth are symmetrically arranged on the sleeve at two sides of the oblique cutting surface, an operating handle is fixedly connected below the connecting part, a locking part is arranged at the right end surface of the connecting part, a locking groove is formed in the locking part, and a working channel communicated with the connecting part and the sleeve is formed in the locking part;

the collimator body comprises a collimator cylinder, a holding part is fixed on the collimator cylinder, an inserting part is fixedly connected with the left end of the holding part, a fastening knob is connected with the inserting part in a threaded manner, a supporting part is fixed at the right end of the collimator cylinder, a plurality of parallel positioning pin inserting channels are formed in the collimator cylinder, the positioning pin inserting channels are arranged in the collimator body in an arc manner, two adjacent positioning pin inserting channels on the circumference of the collimator body are intersected, and the positioning pin inserting channels at the center of the collimator body are intersected with the positioning pin inserting channels above the collimator body; the locking portion of the support sleeve is inserted into the inserting portion of the collimator body, the fastening knob penetrates through a threaded hole in the inserting portion and then is inserted into the locking groove of the locking portion, and the collimator body is fixed into the inserting portion of the support sleeve through the squeezing effect.

Preferably, the included angle between the oblique cutting plane and the left end face of the sleeve is 45 degrees, the central axis of the positioning tooth is perpendicular to the oblique cutting plane, and an angle of 45-60 degrees is formed between the operating handle and the sleeve.

Preferably, the support sleeve and the collimator body are made of stainless steel materials.

The utility model has the advantages that: the sighting device is applied to anterior odontoid process screw internal fixation, helps to guide the positioning needle, enables the positioning needle to be inserted at the best position and at a proper angle in the process of being driven into the axis, prevents the positioning needle from bending due to long operation distance, increases the positioning accuracy of the positioning needle, and can reduce operation time and reduce the use times of a C-shaped arm X-ray machine in the operation by applying the odontoid process positioning needle sighting device; the support sleeve can effectively support the incision to prevent the incision from being closed to influence the insertion and the extraction of the collimator, and meanwhile, the collimator body is provided with a plurality of parallel positioning needle insertion channels, so that the positioning needles can be driven into the pivot cone from a plurality of positions.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an assembly structure of a dentate process alignment pin collimator;

FIG. 2 is a schematic structural view of the support sleeve;

FIG. 3 is a schematic structural view of the collimator body;

fig. 4 is a structural view of an a-a end face of the collimator body.

In the drawings, the components represented by the respective reference numerals are listed below:

1-supporting sleeve, 2-collimator body, 3-sleeve, 4-positioning tooth, 5-baffle, 6-connecting part, 7-locking part, 8-locking groove, 9-working channel, 10-operating handle, 11-aiming cylinder, 12-holding part, 13-inserting part, 14-fastening knob, 15-positioning needle inserting channel outlet, 16-abutting part and 17-positioning needle inserting channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, a dentate protruding positioning needle collimator comprises a support sleeve 1 and a collimator body 2, wherein the support sleeve 1 and the collimator body 4 are made of stainless steel materials, the support sleeve 1 is 222mm long and 8mm in outer diameter, the collimator body 2 is inserted into the support sleeve 1, and the right end of the collimator body 2 extends out of the right end of the support sleeve 1; support sleeve 1 includes sleeve pipe 3 and connecting portion 6, is equipped with separation blade 5 between sleeve pipe 3 and connecting portion 6 fixed connection and sleeve pipe 3 and the connecting portion 6, and sleeve pipe 3's left end portion is equipped with the scarf, and the sleeve pipe 3 symmetry of scarf both sides is equipped with location tooth 4, and the contained angle of scarf and sheathed tube left end face is 45, and the below fixedly connected with operating handle 10 of connecting portion 6 is 45 ~ 60 jiaos between operating handle 10 and the sleeve pipe 3. The right end face of the connecting part 6 is provided with a locking part 7, the locking part 7 is provided with a locking groove 8, the locking part 7 is provided with a working channel 9 communicated with the connecting part 6 and the sleeve 3, the length of the sleeve 3 is 10mm, and the outer diameter of the pipe is 10 mm.

The collimator body 2 comprises a collimator cylinder 11, the collimator cylinder 11 is 260mm in length and 6mm in outer diameter, a holding part 12 is fixed on the collimator cylinder, an inserting part 13 is fixedly connected to the left end of the holding part 12, a fastening knob 14 is connected to the inserting part 13 in a threaded manner, an abutting part 16 is fixed at the right end of the collimator cylinder 11, a plurality of parallel positioning needle inserting channels 17 are formed in the collimator cylinder 11, the positioning needle inserting channels 17 are arranged in the collimator body 2 in an arc manner, two adjacent positioning needle inserting channels 17 on the circumference of the collimator body are intersected, and the positioning needle inserting channel at the center of the collimator body 2 is intersected with the positioning needle inserting channel above the collimator body; the locking part 7 of the support sleeve 1 is inserted into the inserting part 13 of the collimator body 2, the fastening knob 14 is inserted into the locking groove 8 of the locking part after passing through the threaded hole on the inserting part 13 and fixes the collimator body 2 in the inserting part 13 of the support sleeve 1 by pressing, and the positioning needle insertion passage 17 is a circular hole with the diameter of 1.6 mm.

One specific application of the device is as follows: the anterior patient lies on the back, the nasal cavity cannula or the local nerve block are narcotized, the skull is pulled, the shoulder is padded with a thin pillow, the head is stretched later, the opening position is kept, the C-arm machine is monitored by X-ray to reset, and the head is fixed; c4 and 5 horizontal right sternocleidomastoid intramuscular lateral margin of the patient are leveled, the skin is cut for 5mm, the support sleeve 1 is inserted along the gap to reach C4 and 5 anterior fascia, and slides up and down along the gap of the loose fascia at the inner lateral margin of the vascular sheath, and the tip of the positioning tooth at the front end of the support sleeve 1 is placed into the lower edge of the C2 vertebral body under fluoroscopy; after the direction of the support sleeve 1 is determined, the collimator body 2 is inserted along the working channel 9 of the connecting part at the rear end of the support sleeve 1 until the front end of the collimator body 2 abuts against the vertebral surface of the part to be operated, and then the fastening knob 14 is screwed to press the front end thereof into the locking groove 8 so that the sighting cylinder 3 is fixed in the sleeve 3; then inserting two kirschner wires respectively along the positioning pin insertion channels 17 on the collimator body 2 and inserting the kirschner wires into the vertebral body to fix the collimator body 2 on the vertebral body, and then inserting a third kirschner wire along the positioning pin insertion channels 17 on the collimator body 2 so as to enter along a predetermined surgical direction; the first two k-wires and the collimator body 2 are removed, the k-wires are then inserted and reamed using a hollow bore, and finally the k-wires are removed, the dentate process screw is screwed into the fractured vertebral body along the support sleeve 1 and through the fracture line.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (3)

1. A dentate protruding positioning needle collimator is characterized by comprising a support sleeve (1) and a collimator body (2), wherein the collimator body (2) is inserted into the support sleeve (1) and is fixed in the support sleeve (1) through a fastening knob;

the support sleeve (1) comprises a sleeve (3) and a connecting part (6), the sleeve (3) is fixedly connected with the connecting part (6), a blocking piece (5) is arranged between the sleeve (3) and the connecting part (6), an oblique cutting surface is arranged at the left end part of the sleeve (3), positioning teeth (4) are symmetrically arranged on the sleeve (3) at two sides of the oblique cutting surface, an operating handle (10) is fixedly connected below the connecting part (6), a locking part (7) is arranged at the right end face of the connecting part (6), a locking groove (8) is formed in the locking part (7), and a working channel (9) communicated with the connecting part (6) and the sleeve (3) is formed in the locking part (7);

the collimator body (2) comprises a collimator cylinder (11), a holding part (12) is fixed on the collimator cylinder, an inserting part (13) is fixedly connected to the left end of the holding part (12), a fastening knob (14) is connected to the inserting part (13) in a threaded manner, a butting part (16) is fixed at the right end of the collimator cylinder (11), a plurality of parallel positioning needle inserting channels (17) are formed in the collimator cylinder (11), the positioning needle inserting channels (17) are arranged in the collimator body (2) in an arc manner, two adjacent positioning needle inserting channels (17) on the circumference of the collimator body are intersected, and the positioning needle inserting channel at the center of the collimator body (2) is intersected with the positioning needle inserting channel above the collimator body; the locking part (7) of the support sleeve (1) is inserted into the inserting part (13) of the collimator body (2), the fastening knob (14) penetrates through a threaded hole in the inserting part (13) and then is inserted into the locking groove (8) of the locking part, and the collimator body (2) is fixed in the inserting part (13) of the support sleeve (1) through squeezing.

2. The sight of the dentate protruding positioning needle as claimed in claim 1, wherein the included angle between the oblique cutting plane and the left end surface of the sleeve is 45 degrees, the central axis of the positioning tooth (4) is perpendicular to the oblique cutting plane, and the angle between the operating handle (10) and the sleeve (3) is 45-60 degrees.

3. The cusp-shaped alignment pin sight of claim 1, wherein the support sleeve (1) and the sight body (2) are made of stainless steel.

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