CN205268232U - Wire Saw Catheter Introducer - Google Patents

Abstract

The utility model relates to a wire saw catheter guider, which comprises a hand-held sleeve and a guide steel wire. The top of the wire saw catheter guide is closed, the guide steel wire is located in the center of the hand-held sleeve, the starting part of the guide wire is connected to the top of the hand-held sleeve, and a push window is set near the exit of the hand-held sleeve, and the hand-held sleeve The end of the tapered end gradually narrows so that the narrowed part is 35 degrees from the main part of the hand sleeve. The utility model has the advantages of being simple and practical, and can safely and accurately insert the wire saw catheter used in the posterior cervical surgery into the introducer in the spinal canal, reducing the risks of dural sac and spinal cord injury.

Description

Wire Saw Catheter Introducer

technical field

The utility model relates to a medical device, in particular to a wire saw catheter guider.

Background technique

In clinical work, spine surgeons often need to place a wire saw into the spinal canal to saw the spinous process along the midline when performing double-door surgery on the posterior cervical spine. Due to the narrow space behind the spinal canal and the stenosis of the patient's spinal canal, the space for safe operation is further reduced. In order to ensure safety, it is generally necessary to insert the wire saw catheter first, and then insert the wire saw through the catheter. Since the wire saw catheter is made of soft polymer material, it is not easy to control the direction of the catheter during the insertion process with tweezers or tissue forceps. Difficulty in passing the catheter often occurs, curling, and entering the side or front of the dura mater, which increases the operation time and risk. . This is especially true for beginners with less clinical experience. Therefore, it is extremely necessary to develop a new wire saw catheter guider that is easy to operate.

Utility model content

The purpose of this utility model is to provide a wire saw catheter guide for posterior cervical surgery. The technical solution adopted by the utility model is: a wire saw catheter guide, including a hand-held sleeve and a guide wire, which is characterized in that : The top of the wire saw catheter guide is closed, the guide steel wire is located at the center of the hand-held sleeve, the starting part of the guide wire is connected to the top of the hand-held sleeve, and a push window is arranged near the exit of the hand-held sleeve, and the hand-held sleeve The end of the barrel tapers so that the narrowing is at 35 degrees to the main body of the handle sleeve.

The technical effect of the utility model is: since the wire saw catheter guider of the present invention adopts the structure of a guiding steel wire and a hand-held sleeve, the wire saw catheter can be well controlled and held after the catheter is set on the steel wire. It fundamentally solves the problems such as the difficulty in passing through the wire saw catheter when inserting the spinous process, the dural sac and spinal cord injury during the longitudinal section of the spinous process in the posterior cervical spine surgery. Under the same surgical conditions, using the wire saw catheter introducer designed by us can significantly shorten the operation time, improve the safety of the operation, and reduce the risk of the operation.

Description of drawings

The utility model will be described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a structural front view of the utility model;

Fig. 2 is a side view of the utility model;

Reference signs are as follows: 1. Hand-held sleeve 2. Guide steel wire 3. Push window.

detailed description

As shown in Figure 1, the technical solution of the utility model is a wire saw catheter guide, including a hand-held sleeve and a guide wire, the top of the wire saw catheter guide is closed, and the guide wire is located in the center of the hand-held sleeve. The starting part of the guide wire is connected to the top of the hand-held sleeve, and a push window is set near the outlet of the hand-held sleeve, and the end of the hand-held sleeve is gradually narrowed, so that the narrowed part is 35 degrees to the main part of the hand-held sleeve . The gradually narrowing structure is adopted at the end of the hand-held sleeve, which can ensure that the catheter starts to walk in the correct direction when entering the spinal canal, and can be accurately and smoothly inserted into the spinal canal. An elliptical push window is set near the outlet of the hand-held sleeve, so that the wire saw catheter covered on the guide wire can be pushed into the spinal canal with fingers.

The wire saw catheter guider can also be set as an internal hollow structure, the center of the hand-held sleeve is about to insert the guide wire into the handle sleeve, and the lower edge of the push window is lower than the horizontal position of the guide wire.

The method of using the utility model is as follows: during the posterior double-door operation of the cervical spine, the incision is exposed, and after the preparation of the entrance and exit of the wire saw catheter at the back of the spinal canal is completed, firstly, the wire saw catheter is placed on the guide wire, and pushed retrogradely into the hand-held sleeve. After the installation is completed, firstly insert the guide wire in front of the introducer (the end is parallel to the front end of the catheter) from the entrance of the back wall of the spinal canal into the spinal canal. After controlling the direction, hold the introducer and push through the push window on the hand sleeve Push the catheter forward step by step with your fingers until it is drawn out from the outlet, and then withdraw from the introducer. After the wire saw catheter is successfully inserted, the wire saw is placed along the catheter to cut the spinous process.

The advantages and positive technical effects of the utility model are: since the wire saw catheter guider of the present invention adopts the structure of a guide steel wire and a hand-held sleeve, after the catheter is placed on the steel wire, the wire saw catheter can be well control, control. The elliptical push window set on the hand-held sleeve can conveniently push the catheter covered on the guide wire forward. The end of the hand-held sleeve is at an angle of 35 degrees to the main body. When in use, it enters the spinal canal first. Because the guide wire The length is the same as that of the catheter, thus ensuring that the steel wire does not come into contact with the dura mater, which not only controls the forward direction of the catheter, but also avoids serious complications such as spinal cord injury. The invention can significantly shorten the insertion time of the wire saw, reduce the probability of nerve tissue secondary damage, and is convenient and reliable to use.

Claims (1)

1. a scroll saw conduit introducer, comprise hand-held sleeve and guide wire, it is characterized in that: the top closure of scroll saw conduit introducer, guide wire is positioned at hand-held bushing core, the initial part of guide wire is connected with hand-held sleeve top, close to hand-held sleeve outlet place, is being provided with one and is pushing window, the end of hand-held sleeve constriction gradually so that narrowed portion and hand-held sleeve main body section are 35 degree.