A plasma radiofrequency surgical electrode capable of introducing hemostatic material

Abstract

The present invention relates to the technical field of medical devices, and discloses a plasma radio frequency surgical electrode capable of introducing hemostatic materials, comprising: a gun body, a knife bar and an introduction tube; the knife bar comprises an outer knife tube and an inner knife body, and the inner knife body is slidably arranged inside the outer knife tube; the introduction tube is connected to the outer knife tube, and an introduction cavity for storing hemostatic materials is arranged on the introduction tube, and the head of the inner knife body extends to the introduction cavity and pushes the hemostatic material to move. The surgical electrode of the present invention is provided with an introduction tube at the end of the knife bar, and the hemostatic material is filled inside the introduction tube. When the inner knife body moves forward, the hemostatic material can be directly pushed out of the introduction tube, and the softening of the hemostatic material is completed by the plasma electrode. At the same time, the hemostatic material can be evenly applied to the bleeding site through the electrode push-out, which overcomes the disadvantage that the hemostatic material is not easy to reach the deep bone groove in the prior art, and the introduction tube and the knife bar are detachably connected, and can be directly removed when not in use, which is convenient and quick, and avoids frequent replacement of instruments.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a plasma radio frequency surgical electrode capable of introducing a hemostatic material. Background Art

[0002] In minimally invasive surgery, plasma radiofrequency surgical electrodes are often used for surgical operations such as cutting and hemostasis. In orthopedic surgery, bleeding from cancellous bone surfaces often occurs. The usual practice is to apply hemostatic materials (including bone wax, fibrin glue, etc.) to the bone surface for hemostasis. The traditional method is to knead the hard hemostatic material to a soft state, and then apply it to the bleeding bone surface with fingers, gauze or a stripper. However, when the bone surface is uneven, the application and hemostasis effects are often poor, and it is easy to scratch the operator's gloves and fingers, increasing the chance of contamination. In addition, there is another method of using curved forceps to clamp a special gauze "peanut ball", laying the hemostatic material on the gauze, and then applying the operation. However, since the gauze is not firmly fixed and is very easy to fall off, the operation is cumbersome and the operation efficiency is low. For example, in posterior cervical laminoplasty, bone rongeurs or drills are used to create several bone grooves between the cervical vertebral lamina and the lateral masses (a surgical step necessary to expand the spinal canal space). However, due to the special shape of the bone grooves (usually V-shaped) and their depth, it is difficult to seal the bleeding points by applying hemostatic materials with fingers, gauze or strippers. This not only slows down the operation, prolongs the operation time and increases intraoperative bleeding, but more importantly, the cervical spinal cord is next to the bone groove. Repeated applications of hemostatic materials may accidentally injure the cervical spinal cord or nerve roots, resulting in irreversible consequences such as nerve damage. Summary of the invention

[0003] Based on the above problems, the present invention provides a plasma radiofrequency surgical electrode capable of introducing hemostatic materials.

[0004] A plasma radiofrequency surgical electrode capable of introducing hemostatic materials comprises: a gun body, a knife rod connected to the gun body, and an introduction tube located at the end of the knife rod;

[0005] The knife bar comprises an outer knife tube and an inner knife body, wherein the inner knife body is slidably arranged inside the outer knife tube; an introduction tube is connected to the outer knife tube, and an introduction cavity for storing hemostatic material is arranged on the introduction tube, and the head of the inner knife body extends to the introduction cavity and pushes the hemostatic material to move;

[0006] The gun body includes a front sleeve, a rear sleeve, a first fixing part and a second fixing part. The front section of the rear sleeve is sleeved inside the front sleeve and is slidably arranged with the inner wall of the front sleeve; the first fixing part is arranged inside the rear sleeve and moves synchronously with the rear sleeve, the second fixing part is arranged inside the front sleeve, the outer knife tube is connected to the second fixing part, and the inner knife body is connected to the first fixing part.

[0007] Furthermore, the end of the inner blade body is conductively connected to the electrode cable, and the head of the inner blade body is detachably connected to the emitting electrode and the return electrode.

[0008] Furthermore, the shapes of the emitting electrode and the return electrode of the inner blade head are adapted to the introduction cavity.

[0009] Furthermore, the interior of the front sleeve is hollow, a spring is disposed in the internal chamber thereof, and a fixing pin is disposed on the rear side of the internal chamber.

[0010] Furthermore, a limiting step is provided at the end of the rear sleeve, one side of the limiting step is connected to the spring, and the other side is movably connected to the fixing pin and is limited by the fixing pin.

[0011] Furthermore, the gun body further comprises a front end cover and a rear end cover, the front end cover is connected to the front sleeve and limits the second fixing member, and the rear end cover is connected to the rear sleeve and connected to the first fixing member.

[0012] Furthermore, a front handle is provided on the front sleeve, and a rear handle is provided on the rear sleeve, and the front handle is hingedly connected to the rear sleeve.

[0013] Furthermore, the outer wall of the outer knife tube is provided with an external thread, the inner wall of the introduction tube is provided with an internal thread, the external thread is adapted to the internal thread, and the introduction tube is threadedly connected to the outer knife tube.

[0014] Furthermore, a guide path is provided on the side wall of the outer knife tube along its axial direction, a buckle groove is provided at the end of the guide path, and a buckle block is provided on the inner wall of the introduction tube, and the buckle block passes through the guide path and is clamped on the buckle groove.

[0015] Furthermore, the shape of the introduction tube on the side close to the introduction cavity includes a wedge shape, a V-groove shape, a cone shape, a pyramid shape and a cylinder shape, and the shape of the introduction tube on the side away from the introduction cavity is a cylinder shape.

[0016] The present invention has the following beneficial effects:

[0017] (1) The surgical electrode of the present invention is provided with an introduction tube at the end of the knife rod, and the hemostatic material is loaded inside the introduction tube. When the inner knife body moves forward, the hemostatic material can be directly pushed out of the introduction tube, and the hemostatic material is softened by relying on the plasma electrode, so that the hemostatic material is coated on the bleeding bone surface. The hemostatic material is pushed out by the electrode, and the hemostatic material can be evenly coated on the bleeding area, thereby overcoming the disadvantage of the prior art that the hemostatic material is not easy to reach the deep bone groove, and the hemostatic effect is improved.

[0018] (2) The introduction tube and the knife rod of the present invention are detachably connected and can be directly removed when not in use, which is convenient and quick and avoids frequent replacement of instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of the surgical electrode of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 2 The overall structure of the surgical electrode of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 3 is an axial cross-sectional schematic diagram of a surgical electrode of the present invention;

[0022] Figure 4 It is a cross-sectional schematic diagram of the connection between the introduction tube and the knife rod in the first embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the introduction tube in the first embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the outer knife tube in the second embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the introduction tube in the second embodiment of the present invention.

[0026] In the figure: 1-gun body; 10-front sleeve; 11-rear sleeve; 111-limiting step; 12-front cover; 13-rear cover; 14-first fixing piece; 15-second fixing piece; 16-front handle; 17-rear handle; 18-spring; 19-fixing pin; 2-knife rod; 20-external knife tube; 201-external thread; 202-buckle groove; 203-guide channel; 21-inner knife body; 211-emitting electrode; 212-loop electrode; 3-introduction tube; 301-introduction cavity; 302-buckle block; 4-electrode cable. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] Embodiment 1

[0029] refer to Figures 1 to 3 The present invention provides a plasma radiofrequency surgical electrode capable of introducing hemostatic materials, comprising: a gun body 1, a knife rod 2 connected to the gun body 1, and an introduction tube 3 located at the end of the knife rod 2.

[0030] The knife rod 2 includes an outer knife tube 20 and an inner knife body 21. The interior of the outer knife tube 20 is hollow. The inner knife body 21 is slidably arranged inside the outer knife tube 20. The head of the inner knife body 21 is detachably connected with an emitting electrode 211 and a loop electrode 212. The emitting electrode 211 and the loop electrode 212 are separated by an insulating shell.

[0031] The gun body 1 comprises a front sleeve 10, a rear sleeve 11, a first fixing member 14 and a second fixing member 15. The interior of the front sleeve 10 is hollow, and a spring 18 is arranged in its internal chamber, and a fixing pin 19 is arranged at the rear side of the internal chamber; the rear sleeve 11 is a stepped structure, and a limiting step 111 is arranged at the end of the rear sleeve 11. The front section of the rear sleeve 11 is sleeved inside the front sleeve 10 and is slidably arranged with the inner wall of the internal chamber of the front sleeve 10 through the limiting step 111. The step end face of the rear sleeve 11 is movably connected with the end face of the front sleeve 10, so that the rear sleeve 11 can move axially over a certain distance.

[0032] One end of the spring 18 inside the front sleeve 10 is connected to the limiting step 111, and the other end is connected to the end face of the internal chamber. The limiting step 111 is located in front of the fixing pin 19 (the front / front side in this embodiment refers to the side close to the electrode), and is movably connected to the fixing pin 19 and limited by the fixing pin 19.

[0033] The first fixing member 14 is disposed inside the rear sleeve 11 and fixed to the rear sleeve 11 so as to be able to move synchronously with the rear sleeve 11. The first fixing member 14 is hollow inside, and the end of the inner blade body 21 is plugged into the first fixing member 14. At the same time, the electrode cable 4 passes through the inside of the first fixing member 14 and is conductively connected to the inner blade body 21. The second fixing member 15 is disposed inside the front sleeve 10, and the outer blade tube 20 passes through the second fixing member 15 and is connected to the second fixing member 15.

[0034] The gun body 1 further includes a front end cover 12 and a rear end cover 13, wherein the front end cover 12 is connected to the front sleeve 10 and limits the second fixing member 15, and the rear end cover 13 is connected to the rear sleeve 11 and connected to the first fixing member 14. Specifically, the inner walls of the front end cover 12 and the rear end cover 13 are both provided with threads, and the outer walls of the front sleeve 10 and the rear sleeve 11 are also provided with threads, so that the front end cover 12 is threadedly connected to the front sleeve 10, and the rear end cover 13 is threadedly connected to the rear sleeve 11.

[0035] A front handle 16 is hinged on the front sleeve 10, and a rear handle 17 is hinged on the rear sleeve 11, and the front handle 16 is hingedly connected to the rear sleeve 11. When the front handle 16 and the rear handle 17 are gripped, the limiting step 111 of the rear sleeve 11 will slide along the internal chamber of the sleeve 10, and the limiting step 111 pushes the spring 18 to compress the spring 18, and at the same time, the first fixing member 14 drives the inner blade 21 to move forward; when the front handle 16 and the rear handle 17 are released, the compressed spring 18 rebounds and pushes the limiting step 111 to move backward and is finally blocked by the fixing pin 19, and at the same time, the first fixing member 14 drives the inner blade 21 to move backward. Figure 1 The figure shows a schematic diagram of the front handle 16 and the rear handle 17 when they are unfolded. Figure 2It is a schematic diagram of holding the front handle 16 and the rear handle 17 tightly; the front handle 16 is provided with a wavy anti-slip pattern.

[0036] refer to Figure 4 and Figure 5 The introduction tube 3 is connected to the outer blade tube 20, and the introduction tube 3 is provided with an introduction cavity 301 for storing hemostatic material. The head of the inner blade body 21 extends to the introduction cavity 301 and pushes the hemostatic material to move. Among them, the hemostatic material includes fibrin glue, bone wax and many other materials.

[0037] The outer wall of the outer knife tube 20 is provided with an outer thread 201 , and the inner wall of the introduction tube 3 is provided with an inner thread. The outer thread 201 is matched with the inner thread, and the introduction tube 3 is threadedly connected with the outer knife tube 20 .

[0038] When the inner blade body 21 moves forward, it will extend into the introduction cavity 301 of the introduction tube 3, pushing the hemostatic material in the introduction cavity 301 to flow outward, so that the hemostatic material is coated on the bleeding site. When the inner blade body 21 moves backward, the introduction cavity 301 can be reloaded with hemostatic material, so that the hemostatic material can be filled multiple times.

[0039] The outer shape of the side of the introduction tube 3 close to the introduction cavity 301 includes various shapes such as wedge, V-groove, cone, pyramid and cylinder. These shapes are used to adapt to the shape of the bone surface to be cut during surgery. At the same time, the shapes of the emitting electrode 211 and the loop electrode 212 at the head of the inner blade body 21 are adapted to the introduction cavity 301, so that the hemostatic material can be evenly applied to the bleeding area when the head of the inner blade body 21 moves forward; the outer shape of the side of the introduction tube 3 away from the introduction cavity 301 is cylindrical, which is convenient for connecting with the outer blade tube 20.

[0040] The surgical electrode of the present invention can meet two surgical situations. First, when bone surface hemostasis is not required, there is no need to install the introduction tube 3; second, when bone surface hemostasis is required, the introduction tube 3 is connected to the outer knife tube 20, and the introduction tube 3 is inserted into the hemostatic material for filling, and the end of the introduction tube 3 is sent to the bone surface that needs hemostasis, the electrode cable 4 is energized, and the transmitting electrode 211 discharges to automatically soften the hemostatic material, and by pinching the front handle 16 and the rear handle 17, the inner knife body 21 moves forward and pushes the softened hemostatic material to the place where hemostasis is required, loosen the front handle 16 and the rear handle 17, and the inner knife body 21 retracts. The introduction tube 3 can be filled with hemostatic material again until the required amount of hemostatic material for bone surface hemostasis is completed. After the hemostatic material is coated, the introduction tube 3 is disassembled, and the plasma electrode can be used for subsequent surgery.

[0041] Embodiment 2

[0042] In this embodiment, only the connection method between the outer blade tube 20 and the introduction tube 3 is different, and other components and settings are the same as those in the first embodiment.

[0043] refer to Figure 6 , Figure 6 The figure shows the positional relationship between the outer blade tube 20 and the inner blade body 21. Two guide paths 203 are provided on the side wall of the outer blade tube 20 along the axial direction thereof. The two guide paths 203 are rectangular grooves of equal width and are symmetrically distributed. The guide paths 203 penetrate the side wall of the outer blade tube 20 and one end extends to the end face of the outer blade tube 20. A buckle groove 202 is provided at the end of the guide path 203. The buckle groove 202 extends along the circumferential wall of the outer blade tube 20 and communicates with the guide path 203.

[0044] refer to Figure 7 , Figure 7 The figure shows an axial cross-sectional schematic diagram of the introduction tube 3. The introduction tube 3 is cylindrical as a whole, and a protruding buckle block 302 is provided on its inner wall. The buckle block 302 is adapted to the buckle groove 202. When the introduction tube 3 needs to be connected to the outer knife tube 20, the introduction tube 3 is sleeved on the outer knife tube 20 and the buckle block 302 is aligned with the guide channel 203. After the buckle block 302 slides through the guide channel 203, the introduction tube 3 is rotated so that the buckle block 302 is clamped on the buckle groove 202, thereby connecting the introduction tube 3 to the outer knife tube 20. When the introduction tube 3 needs to be removed, the operation is opposite to the steps of installing the introduction tube 3.

[0045] The above description is only a preferred embodiment of the present invention, which does not represent all possible forms of the present invention, and the protection scope of the present invention is not limited to such special statements and embodiments. According to the technical enlightenment disclosed by the present invention, various other modifications and improvements that do not deviate from the essence of the present invention are made, and these modifications and improvements are still within the protection scope of the present invention.

Claims

1. A plasma radiofrequency surgical electrode capable of introducing hemostatic material, characterized in that: include: A gun body (1), a knife rod (2) connected to the gun body (1), and a detachable introduction tube (3) located at the end of the knife rod (2); The knife rod (2) comprises an outer knife tube (20) and an inner knife body (21), wherein the inner knife body (21) is slidably arranged inside the outer knife tube (20); the introduction tube (3) is connected to the outer knife tube (20), and an introduction cavity (301) for storing a hemostatic material is provided on the introduction tube (3); the head of the inner knife body (21) extends into the introduction cavity (301) and pushes the hemostatic material to move; The gun body (1) comprises a front sleeve (10), a rear sleeve (11), a first fixing member (14) and a second fixing member (15); the front section of the rear sleeve (11) is sleeved inside the front sleeve (10) and is slidably arranged with the inner wall of the front sleeve (10); the first fixing member (14) is arranged inside the rear sleeve (11) and moves synchronously with the rear sleeve (11); the second fixing member (15) is arranged inside the front sleeve (10); the outer blade tube (20) is connected to the second fixing member (15); and the inner blade body (21) is connected to the first fixing member (14); The end of the inner blade body (21) is conductively connected to the electrode cable (4), and the head of the inner blade body (21) is detachably connected to the emission electrode (211) and the return electrode (212); The front sleeve (10) is hollow inside, a spring (18) is arranged in its internal chamber, and a fixing pin (19) is arranged on the rear side of the internal chamber; A limiting step (111) is provided at the end of the rear sleeve (11), one side of the limiting step (111) is connected to the spring (18), and the other side is movably connected to the fixing pin (19) and is limited by the fixing pin (19).

2. The plasma radiofrequency surgical electrode capable of introducing hemostatic material according to claim 1, characterized in that: The shapes of the emitting electrode (211) and the return electrode (212) at the head of the inner blade body (21) are adapted to the introduction cavity (301).

3. The plasma radiofrequency surgical electrode capable of introducing hemostatic material according to claim 1, characterized in that: The gun body (1) further comprises a front end cover (12) and a rear end cover (13), wherein the front end cover (12) is connected to the front sleeve (10) and limits the second fixing member (15), and the rear end cover (13) is connected to the rear sleeve (11) and connected to the first fixing member (14).

4. The plasma radiofrequency surgical electrode capable of introducing hemostatic material according to claim 1, characterized in that: The front sleeve (10) is provided with a front handle (16), and the rear sleeve (11) is provided with a rear handle (17), and the front handle (16) is hingedly connected to the rear sleeve (11).

5. The plasma radiofrequency surgical electrode capable of introducing hemostatic material according to claim 1, characterized in that: The outer wall of the outer knife tube (20) is provided with an external thread (201), the inner wall of the introduction tube (3) is provided with an internal thread, the external thread (201) is adapted to the internal thread, and the introduction tube (3) is threadedly connected to the outer knife tube (20).

6. The plasma radiofrequency surgical electrode capable of introducing hemostatic material according to claim 1, characterized in that: A guide channel (203) is provided on the side wall of the outer knife tube (20) along its axial direction, a buckle groove (202) is provided at the end of the guide channel (203), and a buckle block (302) is provided on the inner wall of the introduction tube (3), and the buckle block (302) passes through the guide channel (203) and is clamped on the buckle groove (202).

7. The plasma radiofrequency surgical electrode capable of introducing hemostatic material according to any one of claims 1 to 6, characterized in that: The outer shape of the side of the introduction tube (3) close to the introduction cavity (301) includes a wedge shape, a V-shaped groove shape, a cone shape, a pyramid shape or a cylinder shape, and the outer shape of the side of the introduction tube (3) away from the introduction cavity (301) is a cylinder shape.

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