A cutting saw mechanism for percutaneous puncture drainage

Abstract

The present invention relates to a cutting saw blade mechanism for percutaneous puncture drainage, comprising a puncture sheath, a puncture needle core movably sleeved inside the sheath, the sheath being a hollow tubular structure with two ends open, one end of the sheath being a pointed tip; a plurality of continuously arranged saw teeth are arranged on one side of the needle core, and the tooth tips of the saw teeth are inclined toward the tip of the sheath, and the end of the needle core in contact with the saw teeth is a structure with a diamond cross-section; the saw teeth pass through the tip of the sheath; a scale mark is arranged at the other end of the needle core; an adjusting nut is sleeved on the needle core, and the adjusting nut is located outside the sheath; a limiting portion is also arranged on the outer surface of the sheath and at one end close to the adjusting nut. The device has strong functionality and can be widely used in the field of medical equipment technology.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a cutting saw mechanism for percutaneous puncture drainage. Background Art

[0002] Clinically, there are often infectious effusions separated by multiple cavities and encapsulated abscesses, which require percutaneous B-ultrasound positioning and catheter drainage. However, in practice, one-time drainage is often difficult to succeed, which not only causes multiple pains to patients, but also brings great suffering to medical staff, affecting the patient's postoperative recovery. There are drainage devices in the prior art, which also solve the problem of handling effusion after drainage, but they cannot achieve the purpose of one-time successful drainage, and the operation process is uncontrollable, affecting the accuracy of drainage, and there will be incidental wounds, thereby prolonging the postoperative recovery speed.

[0003] Therefore, a drainage device with controllable drainage depth, no incidental wounds and achieving the purpose of one-time drainage needs to be proposed. Summary of the invention

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0005] A cutting saw mechanism for percutaneous puncture drainage comprises a puncture sheath and a puncture needle core movably sleeved inside the sheath, wherein the sheath is a hollow tubular structure with openings at both ends, and one end of the sheath is a pointed tip; a plurality of continuously arranged saw teeth are arranged on one side of the needle core, and the tooth tips of the saw teeth are inclined toward the tip of the sheath, and the end of the needle core in contact with the saw teeth is a sharp structure with edges; the saw teeth pass through the tip of the sheath; a scale mark is provided at the other end of the needle core; an adjusting nut is also sleeved on the needle core, and the adjusting nut is located outside the sheath; a limiting portion is also provided on the outer surface of the sheath and at one end close to the adjusting nut.

[0006] Furthermore, the serrations are arranged in sequence from the sharp end of the needle core to the end of the needle core with a scale mark, and terminate at a predetermined position one; the adjusting nut is threadedly connected to the part of the needle core where the scale mark is located, and the needle core is provided with an external thread that matches the adjusting nut.

[0007] Furthermore, the scale mark extends from the non-sharp end of the needle core to the other end thereof and terminates at a predetermined position two; and the external thread extends from the non-sharp end of the needle core to a predetermined position three.

[0008] Furthermore, a gripping block is provided at the non-sharp end of the needle core, and the gripping block is designed to be a regular geometric shape.

[0009] Furthermore, the portion of the needle core where the scale mark is located is configured as a structure with a semicircular cross section.

[0010] Furthermore, the limiting portion is configured as a hollow columnar structure which is circumferentially fixed to the sheath tube and is thin at the top and thick at the bottom.

[0011] Furthermore, the maximum outer diameter of the limiting portion is greater than the outer diameter of the adjusting nut.

[0012] Furthermore, the cutting saw mechanism also includes a pigtail drainage tube and a drainage tube guide wire.

[0013] After adopting the above structure, the present invention has the following advantages:

[0014] By arranging the sheath and the needle core to cooperate with each other, the saw teeth of the needle core are used to cut back and forth, puncture and cut open the effusion or abscess separating cyst wall at the same time, so as to achieve the purpose of one-time drainage;

[0015] By setting the adjusting nut and the scale mark, the purpose of accurately controlling the percutaneous puncture depth is achieved, the quality of the operation is improved, and then the patient's recovery speed is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] Combined with Figure 1 A cutting saw mechanism for percutaneous puncture drainage comprises a puncture sheath 1, a puncture needle core 2 movably sleeved inside the sheath 1, the sheath 1 is a hollow tubular structure with two ends open, and one end of the sheath 1 is a pointed tip; a plurality of continuously arranged saw teeth 3 are arranged on one side of the needle core 2, and the tooth tips 301 of the saw teeth 3 are inclined toward the tip 101 of the sheath 1, and the end of the needle core 2 in contact with the saw teeth 3 is a sharp structure with edges; the saw teeth 3 pass through the tip 101 on the sheath 1; a scale mark 4 is provided at the other end of the needle core 2; an adjusting nut 5 is also sleeved on the needle core 2, and the adjusting nut 5 is located outside the sheath 1; a limiting portion 6 is also provided on the outer surface of the sheath 1 and at one end close to the adjusting nut 5.

[0019] During the specific use of the device, the device is positioned and punctured by B-ultrasound to reach the multi-compartmental cavity, and the length of the extended part of the needle core 2 is controllably adjusted by adjusting the nut 5, and then repeatedly pushed forward under B-ultrasound positioning, and the separation cyst wall tissue is cut and opened by the withdrawal and advancement method, and then the pigtail drainage tube and drainage guide wire are inserted, so as to achieve the purpose of cutting and draining multi-compartmental fluid abscesses at one time. By setting the advancing end of the needle core 2 as a sharp structure with edges, the purpose of facilitating penetration of the diaphragm is achieved, and the practicability is stronger.

[0020] In this process, by setting the sheath tube 1 to a structure with a tip, the purpose of puncture is facilitated and the withdrawal is facilitated; and in the process of withdrawal, in order to improve the flexibility of withdrawal and reduce the withdrawal resistance, the sawtooth 3 is set in the direction of the tooth tip 301 facing the tip 101, so that the convenience of withdrawal is improved in the process of cutting with the sawtooth 3. In terms of structure, in order to improve the functionality of the device and to achieve accurate control of the length of puncture travel, a scale mark 4 and an adjustment nut 5 are set. In specific use, the needle core 2 is screwed so that the end of the needle core 2 with the sawtooth 3 extends out of the sheath tube 1. Since the adjustment nut 5 is screwed on the needle core 2, as a reference, after being screwed out for a distance, the position of the adjustment nut 5 relative to the needle core 2 will change, so that the purpose of accurately mastering the travel length can be achieved by changing the scale mark 4 indicated by the adjustment nut 5 before and after the needle core 2 is extended, which is more practical and functional.

[0021] The serrations 3 are arranged in sequence from the sharp end 201 of the needle core 2 to the end of the needle core 2 with the scale mark 4, and terminate at a predetermined position one; the adjusting nut 5 is threadedly connected to the portion of the needle core 2 where the scale mark 4 is located, and the needle core 2 is provided with an external thread that matches the adjusting nut 5.

[0022] The sawtooth 3 is arranged on one side of the needle core 2 and extends from the puncture end of the needle core 2 to the other end, so as to realize the withdrawal cutting.

[0023] The scale mark 4 extends from the non-sharp end of the needle core 2 to the other end thereof and terminates at a predetermined position two; the external thread extends from the non-sharp end of the needle core 2 to a predetermined position three.

[0024] Before using the device for puncture, the adjustment nut 5 is located at the starting position. When the needle core 2 is screwed to move forward, the adjustment nut 5 is located at the ending position. The purpose of controlling a given travel distance is achieved by the difference in the scale marks 4 corresponding to the starting position and the ending position.

[0025] A gripping block 7 is provided at the non-sharp end of the needle core 2, and the gripping block 7 is designed to be a regular geometric shape.

[0026] By providing the gripping block 7 on the needle core 2, the purpose of facilitating the operation of the device can be achieved.

[0027] The portion of the needle core 2 where the scale mark 4 is located is configured to have a semicircular cross-section.

[0028] The limiting portion 6 is configured as a hollow columnar structure that is circumferentially fixed to the sheath tube 1 and is thin at the top and thick at the bottom.

[0029] The maximum outer diameter of the limiting portion 6 is greater than the outer diameter of the adjusting nut 5 .

[0030] Functionally, by providing the limiting portion 6 , a certain limiting effect on the adjusting nut 5 can be achieved, and the purpose of facilitating the operation of the sheath tube 1 can be achieved.

[0031] The cutting saw mechanism also includes a pigtail drainage tube and a drainage tube guide wire.

[0032] Pigtail drainage tubes and drainage tube guide wires are existing technologies and will not be described in detail here. In the specific implementation process, the existing widely used ones can be directly used.

[0033] In summary, by using this device to perform percutaneous cutting, not only is the operation simple and the purpose of one-time drainage is achieved, but the length of percutaneous puncture is controllable, thereby improving the accuracy of the operation, and the practicality and functionality are strong.

Claims

1. A cutting saw mechanism for percutaneous puncture drainage, characterized in that: It includes a puncture sheath and a puncture needle core movably connected inside the sheath, the sheath is a hollow tubular structure with openings at both ends, and one end of the sheath is a pointed tip; one side of the needle core is provided with a plurality of continuously arranged saw teeth, and the tooth tips of the saw teeth are inclined toward the tip of the sheath, and the end of the needle core in contact with the saw teeth is a sharp structure with edges; the saw teeth pass through the tip of the sheath; the other end of the needle core is provided with a scale mark; the needle core is also provided with an adjusting nut, and the adjusting nut is located outside the sheath; a limiting portion is also provided on the outer surface of the sheath and at one end close to the adjusting nut; the saw teeth are arranged in sequence from the sharp end of the needle core to the end of the needle core with a scale mark, and terminate at a predetermined position 1. The adjusting nut is threadedly connected to the part of the needle core where the scale marking is located, and the needle core is provided with an external thread that matches the adjusting nut; the scale marking extends from the non-sharp end of the needle core to the other end thereof, and terminates at a predetermined position; 2. The external thread extends from the non-sharp end of the needle core to the predetermined position; 3. A holding block is provided at the end position of the non-sharp end of the needle core, and the holding block is set to a regular geometric shape; the part of the needle core where the scale marking is located is set to a structure with a semicircular cross-section; the limiting part is set to a hollow cylindrical structure that is circumferentially fixed to the sheath and is thin at the top and thick at the bottom; the maximum outer diameter of the limiting part is larger than the outer diameter of the adjusting nut; the cutting saw mechanism also includes a pigtail drainage tube and a drainage tube guide wire.

Images