Disposable catgut embedding needle

Abstract

The utility model relates to the technical field of medical instruments, and provides a disposable catgut embedding needle which comprises a needle seat, a lining core seat and a protective sleeve, a needle tube is fixedly arranged on the needle seat, a lining core is fixedly arranged on the lining core seat, the lining core is slidably inserted into the needle tube, the protective sleeve slidably sleeves the outer side of the needle tube, and the lining core seat is fixedly connected with the needle seat through a limiting mechanism. The disposable syringe has the advantages that the lining core on the lining core seat is inserted into the needle tube, the lining core seat and the needle seat are connected and fixed through the limiting mechanism, meanwhile, the protective sleeve is arranged on the outer side of the needle tube in a sleeved mode, the cylinder and the protective cover are connected and fixed through the limiting protrusions, and therefore the disposable syringe is convenient to use. The stability among the needle tube, the lining core and the protective sleeve is improved, and the protection safety performance of the needle tube is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically relates to a disposable suture needle. Background Technology

[0002] Embedded needles are medical instruments used in acupuncture and moxibustion. They use needles and medicated threads to stimulate meridians, balance yin and yang, harmonize qi and blood, and regulate the internal organs in acupoints to achieve the purpose of treating diseases. When it is needed, after routine disinfection of the local skin, the catgut can be inserted into the skin to embed the catgut into the subcutaneous tissue or muscle layer of the acupoint. The operation is very simple.

[0003] However, existing embedding needles are prone to compression deformation or bending during transportation due to their thin needle tubes, which affects their use. Utility Model Content

[0004] In view of this, the present invention provides a disposable embedded needle, in which the liner on the liner seat is inserted into the needle tube, and the liner seat and the needle seat are connected and fixed by a limiting mechanism. At the same time, a protective sleeve is put on the outside of the needle tube, and the cylinder is connected and fixed to the protective cover by a limiting protrusion, thereby improving the stability between the needle tube, the liner, and the protective sleeve, and improving the protective safety performance of the needle tube.

[0005] The technical solution is as follows: A disposable suture needle includes a needle holder, a core holder, and a protective sleeve. A needle tube is fixedly disposed on the needle holder, and a core is fixedly disposed on the core holder. The core is slidably inserted into the needle tube, and the protective sleeve is slidably fitted onto the outside of the needle tube. The core holder is connected and fixed to the needle holder through a limiting mechanism. A cylinder is fixedly disposed on the needle holder, and multiple limiting protrusions are fixedly disposed on the cylinder, which connect and fix the cylinder to the protective sleeve through the limiting protrusions.

[0006] During use, the above technical solution involves inserting the liner core from the liner core holder into the needle tube and connecting and fixing the liner core holder and the needle tube through a limiting mechanism. At the same time, a protective sleeve is placed on the outside of the needle tube, and the cylinder is connected and fixed to the protective cover through a limiting protrusion, thereby improving the stability between the needle tube, the liner core, and the protective sleeve, and enhancing the safety performance of the needle tube.

[0007] Preferably, the limiting mechanism includes an arc-shaped limiting block installed on the needle seat. The liner seat is fixedly provided with an annular limiting groove and an arc-shaped groove. The arc-shaped groove is connected to the annular limiting groove. The arc-shaped limiting block is operated to pass through the arc-shaped groove and be locked in the annular limiting groove to connect and fix the liner seat and the needle seat.

[0008] Preferably, the liner seat has an annular groove, the needle seat has a connecting tube fixedly installed, the connecting tube is movably installed in the annular groove, and there are two arc-shaped limiting blocks, which are evenly distributed circumferentially on the connecting tube, and the arc-shaped groove corresponds to the arc-shaped limiting block.

[0009] Preferably, the plurality of limiting protrusions are evenly distributed along the circumference of the cylinder, a limiting rod is slidably mounted on the limiting protrusion, a third elastic component is provided between the limiting protrusion and the limiting rod, and a limiting hole is provided on the protective sleeve, so that the limiting rod is pushed into the limiting hole by the third elastic component.

[0010] Preferably, the limiting protrusion has a third piston cavity, the limiting rod is fixed on the third piston, the third piston is slidably installed in the third piston cavity, and the third elastic component is movably installed between the third piston cavities, connecting the third piston cavity and the third piston through the third elastic component.

[0011] During use, the above technical solution uses a third elastic component to push the limiting rod into the limiting hole, further improving the stability of the connection between the protective sleeve and the needle seat.

[0012] Preferably, the limiting mechanism further includes a first piston cavity fixed in the needle seat, a first piston is slidably installed in the first piston cavity, a first pressure rod is fixedly disposed on the first piston, a first elastic component is disposed between the first piston cavity and the first piston, the first piston cavity is sealed and connected to the third piston cavity through an air supply cavity, the liner seat is connected and fixed to the liner through a connecting post, one end of the connecting post extends out of the liner seat, and the connecting post corresponds to the first pressure rod.

[0013] During use, the above technical solution works as follows: the connecting column on the liner seat presses down the first pressure rod, which drives the first piston to move along the first piston cavity, thereby compressing the gas pressure in the first piston cavity, the third piston cavity and the gas delivery cavity, thereby pushing the limiting rod into the limiting hole, realizing the linkage and fixing function between the liner seat, the protective sleeve and the needle seat, improving the stability of needle tube protection and facilitating operation.

[0014] Preferably, the needle holder has two symmetrical second piston cavities, in which a second piston is slidably installed in a sealed manner. The second piston is connected and fixed to the arc-shaped limiting block by a second sliding rod, and the second piston cavity is in sealed communication with the first piston cavity through an air supply cavity.

[0015] Preferably, a second elastic component is movably installed in the second piston cavity. One end of the second elastic component is fixedly connected to the second piston cavity, and the other end is fixedly connected to the second piston. Two symmetrical arc-shaped grooves are opened on the needle seat. The arc-shaped limiting block is driven to be located in the arc-shaped groove by the second elastic component. An annular limiting groove is opened on the liner seat, and the arc-shaped limiting block corresponds to the annular limiting groove.

[0016] Preferably, the core support is provided with a sliding cavity, and a second pressure rod is slidably installed in the sliding cavity. A fourth elastic component is provided between the second pressure rod and the sliding cavity. By operating the second pressure rod, the arc-shaped limiting block is pushed into the arc-shaped groove.

[0017] Preferably, the needle tube has a notch, the needle seat is a hollow structure, and the outer side of the needle seat has multiple rectangular surfaces with a central depression.

[0018] During use, the above technical solution features a notch in the needle tube to prevent secondary injury to the patient when the needle is removed, and multiple rectangular surfaces with central indentations form a columnar shape, which facilitates medical staff in administering treatment.

[0019] After adopting the above technical solution, the beneficial effects of this utility model are:

[0020] 1. Insert the liner core on the liner core seat into the needle tube, and connect and fix the liner core seat and the needle seat through the limiting mechanism. At the same time, put the protective sleeve on the outside of the needle tube, and connect and fix the cylinder to the protective cover through the limiting protrusion, so as to improve the stability between the needle tube, the liner core, and the protective sleeve, and improve the protection and safety performance of the needle tube.

[0021] 2. Press down the first pressure rod on the connecting column on the liner seat. The first pressure rod drives the first piston to move along the first piston cavity, thereby compressing the gas pressure in the first piston cavity, the third piston cavity and the gas delivery cavity. This pushes the limiting rod into the limiting hole, realizing the linkage and fixing function between the liner seat, the protective sleeve and the needle seat, improving the stability of needle tube protection and facilitating operation.

[0022] 3. The needle tube has a notch to prevent secondary injury to the patient when the needle is removed. Multiple rectangular surfaces with concave centers form a column, which facilitates the medical staff in performing the treatment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the present utility model;

[0025] Figure 2 This is an exploded view of the present invention;

[0026] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0027] Figure 4 This is a partial sectional view of the core support of this utility model;

[0028] Figure 5 This is a perspective view of the needle holder of this utility model;

[0029] Figure 6 This is a partial cross-sectional view of the core support in Embodiment 4 of this utility model;

[0030] Figure 7 This utility model Figure 6 A magnified view of a section at point B in the middle;

[0031] Figure 8 This is a partial cross-sectional view of the needle holder of this utility model;

[0032] Figure 9 This utility model Figure 8 A magnified view of a section at point C;

[0033] Figure 10 This utility model Figure 8 A magnified view of a section at point D;

[0034] Figure 11 This utility model Figure 9 A magnified view of a section at point E in the middle;

[0035] Figure 12 This is a partial cross-sectional view of the protective sleeve of this utility model;

[0036] In the diagram, 1. Needle hub; 2. Needle tube; 3. Notch; 4. Liner seat; 5. Liner; 6. Protective sleeve; 7. Connecting tube; 8. Ring frame; 9. Cylinder; 10. Limiting protrusion; 11. Connecting post;

[0037] 12. Limiting mechanism; 1201. Arc-shaped limiting block; 1202. Annular groove; 1203. Limiting groove; 1204. Arc-shaped groove; 1205. First piston cavity; 1206. First piston; 1207. First pressure rod; 1208. First elastic component; 1209. Gas delivery cavity; 1210. Second piston cavity; 1211. Second elastic component; 1212. Second piston; 1213. Second sliding rod; 1214. Arc-shaped groove; 1215. Third piston cavity; 1216. Third elastic component; 1217. Third piston; 1218. Limiting rod; 1219. Limiting hole;

[0038] 13. Pressing mechanism; 1301. Sliding cavity; 1302. Sliding block; 1303. Second pressure rod; 1304. Fourth elastic component; 1305. Pressing hole; Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Example 1

[0041] like Figures 1 to 5 As shown, a disposable suture needle includes a needle holder 1, a core holder 4, and a protective sleeve 6. A needle tube 2 is fixedly mounted on the needle holder 1, and a core 5 is fixedly mounted on the core holder 4. The core 5 is slidably inserted into the needle tube 2, and the protective sleeve 6 is slidably mounted on the outside of the needle tube 2. The core holder 4 is connected and fixed to the needle holder 1 through a limiting mechanism 12. A cylinder 9 is fixedly mounted on the needle holder 1, and multiple limiting protrusions 10 are fixedly mounted on the cylinder 9. The cylinder 9 and the protective sleeve 6 are connected and fixed through the limiting protrusions 10.

[0042] The limiting mechanism 12 includes an arc-shaped limiting block 1201 installed on the needle holder 1. The core holder 4 is fixedly provided with an annular limiting groove 1203 and an arc-shaped groove 1204. The arc-shaped groove 1204 is connected to the annular limiting groove 1203. The arc-shaped limiting block 1201 is operated to pass through the arc-shaped groove 1204 and be locked in the annular limiting groove 1203 to connect and fix the core holder 4 and the needle holder 1.

[0043] The liner seat 4 has an annular groove 1202, and the needle seat 1 is fixedly provided with a connecting tube 7. The connecting tube 7 is movably installed in the annular groove 1202. There are two arc-shaped limiting blocks 1201, which are evenly distributed circumferentially on the connecting tube 7. The arc-shaped groove 1204 corresponds to the arc-shaped limiting blocks 1201.

[0044] In actual operation: Insert the liner 5 on the liner holder 4 into the needle tube 2. At the same time, align the arc-shaped limiting block 1201 on the needle holder 1 with the arc-shaped groove 1204 and push the arc-shaped limiting block 1201 into the arc-shaped groove 1204. When the arc-shaped limiting block 1201 is located in the annular limiting groove 1203, operate the needle holder 1 to drive the arc-shaped limiting block 1201 to rotate along the annular limiting groove 1203, thereby fixing the arc-shaped limiting block 1201 in the annular limiting groove 1203. At the same time, insert the liner... The seat 4 is connected and fixed to the needle seat 1. Similarly, when it is necessary to remove the liner 5, the needle seat 1 is rotated to drive the arc-shaped limiting block 1201 to rotate along the annular limiting groove 1203, and the needle seat 1 is connected to the arc-shaped limiting block 1201 through the arc groove 1204 to remove it, thereby facilitating the removal and installation of the liner 5. The protective sleeve 6 is put on the needle tube 2, so that one end of the protective sleeve 6 is put on the limiting protrusion 10. Through the interference fit between the limiting protrusion 10 and the protective sleeve 6, the protective sleeve 6 is installed on the needle seat 1.

[0045] Example 2

[0046] Based on Example 1, such as Figures 1-12 As shown, multiple limiting protrusions 10 are evenly distributed around the cylinder 9. A limiting rod 1218 is slidably installed on the limiting protrusion 10. A third elastic component 1216 is provided between the limiting protrusion 10 and the limiting rod 1218. A limiting hole 1219 is provided on the protective sleeve 6. The limiting rod 1218 is pushed into the limiting hole 1219 by the third elastic component 1216.

[0047] Specifically: A ring frame 8 is fixedly installed between the needle holder 1 and the cylinder 9. The diameter of the ring frame 8 is larger than the diameter of the protective sleeve 6. The limiting protrusion 10 is located on the side of the ring frame 8 near the needle tube 2, and the limiting protrusion 10 is inclined.

[0048] A third piston cavity 1215 is provided on the limiting protrusion 10. A limiting rod 1218 is fixed on the third piston 1217. The third piston 1217 is slidably installed in the third piston cavity 1215. A third elastic member 1216 is movably installed between the third piston cavities 1215. The third piston cavity 1215 and the third piston 1217 are connected through the third elastic member 1216.

[0049] Specifically: the third elastic component 1216 is a clamping spring. One end of the clamping spring is fixed in the third piston cavity 1215, and the other end is fixedly connected to the third piston 1217. The limiting hole 1219 is hemispherical, and the end of the limiting rod 1218 is a hemispherical. The clamping spring pushes the hemispherical part of the limiting rod 1218 into the limiting hole 1219.

[0050] In actual operation: the protective sleeve 6 is placed on the limiting protrusion 10. The inner wall of the protective sleeve 6 presses the limiting rod 1218, which drives the third piston 1217 to move along the third piston cavity 1215 and compresses the clamping spring. When the limiting rod 1218 moves to the position of the limiting hole 1219, the clamping spring pushes the hemispherical part of the limiting rod 1218 into the limiting hole 1219, further connecting and fixing the protective sleeve 6 to the needle seat 1. At the same time, the ring frame 8 plays a limiting role for the protective sleeve 6. Similarly, when the protective sleeve 6 is removed, the protective sleeve 6 is dragged by external force, so that the hemispherical part of the limiting rod 1218 is disengaged from the limiting hole 1219, which facilitates the installation and removal of the protective sleeve 6. The operation is simple and the stability is strong.

[0051] Example 3

[0052] Based on Embodiment 2, the limiting mechanism 12 further includes a first piston cavity 1205 fixed in the needle seat 1. A first piston 1206 is slidably installed in the first piston cavity 1205. A first pressure rod 1207 is fixedly installed on the first piston 1206. A first elastic component 1208 is provided between the first piston cavity 1205 and the first piston 1206. The first piston cavity 1205 is sealed and connected to the third piston cavity 1215 through the air supply cavity 1209. The liner seat 4 is connected and fixed to the liner 5 through the connecting post 11. One end of the connecting post 11 extends out of the liner seat 4. The connecting post 11 corresponds to the first pressure rod 1207.

[0053] Specifically: the third elastic component 1216 is a return spring, which drives the limiting rod 1218 to be located in the third piston cavity 1215. The first elastic component 1208 is a return spring. One end of the first elastic component 1208 is fixedly connected to the first piston 1206, and the other end is fixedly connected to the first piston cavity 1205. The first piston cavity 1205 is installed in the connecting pipe 7. The connecting post 11 corresponds to the connecting pipe 7. The first piston cavity 1205 is annular, and the liner 5 passes through the central hole of the first piston cavity 1205.

[0054] In actual operation: the connecting column 11 on the liner seat 4 presses down the first pressure rod 1207, which drives the first piston 1206 to move along the first piston cavity 1205, thereby compressing the gas pressure in the first piston cavity 1205, the third piston cavity 1215 and the gas delivery cavity 1209, thereby pushing the limiting rod 1218 into the limiting hole 1219 and stretching the third elastic component 1216, realizing the linkage and fixing function between the liner seat 4, the protective sleeve 6 and the needle seat 1, improving the stability of the protection of the needle tube 2, and facilitating operation.

[0055] Example 4

[0056] Based on Embodiment 3, two symmetrical second piston cavities 1210 are provided on the needle seat 1. A second piston 1212 is slidably installed in the second piston cavity 1210. The second piston 1212 is connected and fixed to the arc-shaped limiting block 1201 through the second sliding rod 1213. The second piston cavity 1210 is sealed and connected to the first piston cavity 1205 through the air supply cavity 1209.

[0057] In this embodiment, the arc-shaped limiting block 1201 is movably mounted on the connecting pipe 7.

[0058] A second elastic component 1211 is movably installed inside the second piston cavity 1210. One end of the second elastic component 1211 is fixedly connected to the second piston cavity 1210, and the other end is fixedly connected to the second piston 1212. Two symmetrical arc-shaped grooves 1214 are opened on the needle seat 1. The arc-shaped limiting block 1201 is driven to be located in the arc-shaped groove 1214 by the second elastic component 1211. An annular limiting groove 1203 is opened on the core seat 4, and the arc-shaped limiting block 1201 corresponds to the annular limiting groove 1203.

[0059] Specifically: the second elastic component 1211 is a reset spring, and the core seat 4 is provided with a pressing mechanism 13, which pushes the arc-shaped limiting block 1201 into the arc-shaped groove 1214.

[0060] The pressing mechanism 13 includes a sliding cavity 1301 opened on the liner seat 4. A second pressing rod 1303 is slidably installed in the sliding cavity 1301. A fourth elastic component 1304 is provided between the second pressing rod 1303 and the sliding cavity 1301. By operating the second pressing rod 1303, the arc-shaped limiting block 1201 is pushed into the arc-shaped groove 1214.

[0061] Specifically: the sliding cavity 1301 is connected to the annular limiting groove 1203, the second pressure rod 1303 is fixed on the sliding block 1302, the sliding block 1302 is slidably installed in the sliding cavity 1301, the fourth elastic component 1304 is a return spring, one end of the fourth elastic component 1304 is fixedly connected to the sliding block 1302, and the other end is fixedly connected to the sliding cavity 1301, the core seat 4 is provided with a pressing hole 1305, the pressing hole 1305 is connected to the sliding cavity 1301, and the second pressure rod 1303 corresponds to the arc-shaped limiting block 1201.

[0062] In actual operation: the first pressure rod 1207 drives the first piston 1206 to move along the first piston cavity 1205, compressing the gas pressure in the first piston cavity 1205 and the second piston cavity 1210, thereby pushing the second piston 1212 to move along the second piston cavity 1210 and stretching the second elastic component 1211. The second piston 1212 drives the second sliding rod 1213 to push the arc-shaped limiting block 1201 into the annular limiting groove 1203, realizing the connection of the needle seat 1, the liner seat 4, and the retainer. The linkage and fixing function between the three components of the protective sleeve 6 improves the stability of the installation. The second pressure rod 1303 in the pressing hole 1305 pushes the sliding block 1302 to move along the sliding cavity 1301 and stretches the fourth elastic component 1304. At the same time, the second pressure rod 1303 pushes the arc-shaped limiting block 1201 into the arc-shaped groove 1214, which facilitates the disassembly of the needle seat 1 and the core seat 4, and the protective sleeve 6, thereby improving the convenience of installation and disassembly of the three components of the needle seat 1, the core seat 4, and the protective sleeve 6.

[0063] Example 5

[0064] Based on any one of the embodiments 1-4, the needle tube 2 is provided with a notch 3, the needle seat 1 is a hollow structure, and the outer side of the needle seat 1 is a plurality of rectangular surfaces with a central depression.

[0065] In actual operation: The needle tube 2 is equipped with a notch 3 to prevent secondary injury to the patient when the needle is removed. Multiple rectangular surfaces with concave centers form a columnar shape, which facilitates the medical staff to perform the treatment.

[0066] The working principle of this utility model is as follows: The liner 5 on the liner seat 4 is inserted into the needle tube 2. Simultaneously, the arc-shaped limiting block 1201 on the needle seat 1 is aligned with the arc-shaped groove 1204, and the arc-shaped limiting block 1201 is pushed into the arc-shaped groove 1204. When the arc-shaped limiting block 1201 is located within the annular limiting groove 1203, the needle seat 1 is operated to rotate the arc-shaped limiting block 1201 along the annular limiting groove 1203, thereby fixing the arc-shaped limiting block 1201 within the annular limiting groove 1203. The liner seat 4 is connected and fixed to the needle seat 1. Similarly, when the liner 5 needs to be removed, the needle seat 1 is rotated to drive the arc-shaped limiting block 1201 to rotate along the annular limiting groove 1203, and the needle seat 1 is connected to the arc-shaped limiting block 1201 through the arc groove 1204 to remove it, thereby facilitating the removal and installation of the liner 5. The protective sleeve 6 is put on the needle tube 2, so that one end of the protective sleeve 6 is put on the limiting protrusion 10. Through the interference fit between the limiting protrusion 10 and the protective sleeve 6, the protective sleeve 6 is installed on the needle seat 1.

[0067] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A disposable suture needle, comprising a needle holder (1), a core holder (4), and a protective sleeve (6), wherein a needle tube (2) is fixedly disposed on the needle holder (1), a core holder (5) is fixedly disposed on the core holder (4), the core holder (5) is slidably inserted into the needle tube (2), and the protective sleeve (6) is slidably fitted onto the outside of the needle tube (2), characterized in that: The core seat (4) is connected and fixed to the needle seat (1) through the limiting mechanism (12). A cylinder (9) is fixedly provided on the needle seat (1), and multiple limiting protrusions (10) are fixedly provided on the cylinder (9). The cylinder (9) is connected and fixed to the protective sleeve (6) through the limiting protrusions (10).

2. The disposable suture needle according to claim 1, characterized in that, The limiting mechanism (12) includes an arc-shaped limiting block (1201) installed on the needle holder (1). The core holder (4) is fixedly provided with an annular limiting groove (1203) and an arc-shaped groove (1204). The arc-shaped groove (1204) is connected to the annular limiting groove (1203). The arc-shaped limiting block (1201) is operated to pass through the arc-shaped groove (1204) and be stuck in the annular limiting groove (1203) to connect and fix the core holder (4) and the needle holder (1).

3. A disposable suture needle according to claim 2, characterized in that, The liner seat (4) has an annular groove (1202) and the needle seat (1) is fixedly provided with a connecting tube (7). The connecting tube (7) is movably installed in the annular groove (1202). There are two arc-shaped limiting blocks (1201). The two arc-shaped limiting blocks (1201) are evenly distributed on the connecting tube (7) in the circumference. The arc-shaped groove (1204) corresponds to the arc-shaped limiting block (1201).

4. A disposable suture needle according to claim 3, characterized in that, Multiple limiting protrusions (10) are evenly distributed around the cylinder (9). A limiting rod (1218) is slidably installed on the limiting protrusion (10). A third elastic component (1216) is provided between the limiting protrusion (10) and the limiting rod (1218). A limiting hole (1219) is provided on the protective sleeve (6). The limiting rod (1218) is pushed into the limiting hole (1219) by the third elastic component (1216).

5. A disposable suture needle according to claim 4, characterized in that, The limiting protrusion (10) has a third piston cavity (1215), the limiting rod (1218) is fixed on the third piston (1217), the third piston (1217) is slidably installed in the third piston cavity (1215), and the third elastic component (1216) is movably installed between the third piston cavities (1215), and the third piston cavity (1215) and the third piston (1217) are connected through the third elastic component (1216).

6. A disposable suture needle according to claim 5, characterized in that, The limiting mechanism (12) further includes a first piston cavity (1205) fixed in the needle seat (1). A first piston (1206) is slidably installed in the first piston cavity (1205). A first pressure rod (1207) is fixedly provided on the first piston (1206). A first elastic component (1208) is provided between the first piston cavity (1205) and the first piston (1206). The first piston cavity (1205) is sealed and connected to the third piston cavity (1215) through the air supply cavity (1209). The liner seat (4) is connected and fixed to the liner (5) through the connecting post (11). One end of the connecting post (11) extends out of the liner seat (4). The connecting post (11) corresponds to the first pressure rod (1207).

7. A disposable suture needle according to claim 6, characterized in that, The needle seat (1) has two symmetrical second piston cavities (1210). A second piston (1212) is slidably installed in the second piston cavity (1210). The second piston (1212) is connected and fixed to the arc-shaped limiting block (1201) through the second sliding rod (1213). The second piston cavity (1210) is sealed and connected to the first piston cavity (1205) through the air supply cavity (1209).

8. A disposable suture needle according to claim 7, characterized in that, A second elastic component (1211) is movably installed inside the second piston cavity (1210). One end of the second elastic component (1211) is fixedly connected to the second piston cavity (1210), and the other end is fixedly connected to the second piston (1212). Two symmetrical arc-shaped grooves (1214) are opened on the needle seat (1). The arc-shaped limiting block (1201) is driven by the second elastic component (1211) to be located in the arc-shaped groove (1214). An annular limiting groove (1203) is opened on the core seat (4). The arc-shaped limiting block (1201) corresponds to the annular limiting groove (1203).

9. A disposable suture needle according to claim 8, characterized in that, The core support (4) is provided with a sliding cavity (1301), and a second pressure rod (1303) is slidably installed in the sliding cavity (1301). A fourth elastic component (1304) is provided between the second pressure rod (1303) and the sliding cavity (1301). The operation of the second pressure rod (1303) pushes the arc-shaped limiting block (1201) into the arc-shaped groove (1214).

10. A disposable suture needle according to any one of claims 1-9, characterized in that, The needle tube (2) has a notch (3) and the needle seat (1) is a hollow structure. The outer side of the needle seat (1) has multiple rectangular surfaces with a central depression.

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