Disposable high-frequency incision knife

Abstract

The utility model provides a disposable high-frequency incision knife which comprises a knife head and a connecting pipe, the knife head comprises a working end and a connecting end, and the connecting end comprises a boss protruding outwards in the circumferential direction of the connecting end; the connecting pipe comprises a capillary steel pipe and an elastic sleeve, the capillary steel pipe is connected with the connecting end, and the elastic sleeve is arranged on the boss in a sleeving mode and is in interference fit with the boss. According to the disposable high-frequency incision knife, the tail portion of the knife head of the high-frequency knife protrudes slightly to form the boss so that the knife head can be in interference fit with the connecting pipe, during installation, the elastic sleeve of the connecting pipe is arranged on the boss in a sleeving mode, elastic deformation is generated, complete fit is formed, and it is guaranteed that no gap exists between the knife head and the elastic sleeve; during an operation, the cutter head cannot shake relative to the elastic sleeve, so that the stability, the sealing property and the insulating property of a product are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, in particular to a disposable high-frequency incision knife. BACKGROUND

[0002] In the prior art, a disposable high-frequency incision knife is a kind of device that uses the heat generated by high-frequency current to cut and coagulate tissue. This high-frequency incision knife can accurately cut tissue and reduce damage to surrounding tissue. At the same time of cutting, it can coagulate small blood vessels and reduce bleeding. This device is designed for single use, which greatly reduces cross infection caused by repeated use. Therefore, most high-frequency electrotomes are designed to be simple and easy for doctors to operate.

[0003] Although it is disposable, there may be quality problems in the production process of the device, which may cause problems during surgery. In particular, when the tool bit causes unnecessary shaking due to gap caused by welding precision problems or assembly tolerance problems during surgical operation, it may further cause poor tool stability and poor surgical results. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem that the prior art has the defects that the tool bit causes unnecessary shaking due to gap caused by welding precision problems or assembly tolerance problems during surgical operation, which further causes poor tool stability and poor surgical results. The utility model provides a disposable high-frequency incision knife.

[0005] The utility model solves the above technical problem by the following technical scheme:

[0006] A disposable high-frequency incision knife comprises a tool bit and a connecting pipe,

[0007] The tool bit comprises a working end and a connecting end, and the connecting end comprises a boss protruding outward along the circumference thereof;

[0008] The connecting pipe comprises a capillary steel pipe and an elastic sleeve, the capillary steel pipe is connected to the connecting end, and the elastic sleeve is sleeved on the boss and is in interference fit with the boss.

[0009] In the scheme, the tool bit of the high-frequency knife is slightly protruded at the tail to form a boss, so that it can be in interference fit with the connecting pipe. When the connecting pipe is installed, the elastic sleeve of the connecting pipe is sleeved on the boss and elastically deformed to form complete fit to ensure that there is no gap between the tool bit and the elastic sleeve. During surgery, the tool bit cannot shake relative to the elastic sleeve, which increases the stability, sealing property and insulation of the product.

[0010] Preferably, the connecting end further comprises a limiting disc, the limiting disc is arranged on the boss and protrudes outward from the circumference of the boss, and the end of the elastic sleeve abuts against the limiting disc.

[0011] In the scheme, the structure of the limiting disc further protrudes on the original boss, which can limit the elastic sleeve, prevent relative movement between the elastic sleeve and the cutter head and the capillary tube in the length direction, and further improve the sealing performance to ensure the cleanliness of the elastic sleeve and prevent pollutants from entering the connecting pipe.

[0012] Preferably, the diameter of the elastic sleeve is constant along the length direction, and the side of the elastic sleeve towards the connecting end is in interference fit with the boss through elastic deformation.

[0013] In the scheme, the elastic sleeve does not have a variable diameter design, but is connected with the cutter head through elastic deformation, which greatly reduces the head structure compared with the traditional structure connected by hole expansion and internal thread, saves the process steps of hole expansion and internal thread, and further saves the cost.

[0014] Preferably, the disposable high-frequency incision knife further comprises a handle, and the connecting pipe passes through the handle and is fixed in the handle.

[0015] In the scheme, the handle is used to hold the high-frequency incision knife during surgery, which is convenient for operation, and the end of the connecting pipe is fixed in the handle. After the head is fixed by the boss and the limiting disc, the tail is also fixed, which further improves the stability of the overall structure.

[0016] Preferably, the handle is fixed with the connecting pipe by a limiting block, the limiting block is fixed in the handle, the limiting block comprises a first part and a second part arranged oppositely, the first part and the second part are provided with a first arc-shaped slot and a second arc-shaped slot, and the two sides of the connecting pipe are respectively clamped into the first arc-shaped slot and the second arc-shaped slot and clamped and fixed by the first part and the second part.

[0017] In the scheme, the handle is assembled and fixed with the connecting pipe by the limiting block arranged in the handle, which has better limiting effect on the connecting pipe. The limiting block is arranged in two parts and clamped and fixed with the connecting pipe, which has simple structure and strong fixing effect.

[0018] Preferably, the first arc-shaped slot and the second arc-shaped slot have the same hole diameter, but the centers are arranged in an up-down staggered manner.

[0019] In the scheme, the centers of the first arc-shaped slot and the second arc-shaped slot are arranged in an up-down staggered manner, so that when the capillary tube is clamped, the capillary tube is subjected to forces in opposite directions on the two sides, so that it can be clamped and fixed.

[0020] Preferably, the limiting block is clamped and fixed with the capillary tube of the connecting pipe, and the elastic sleeve is arranged outside the limiting block.

[0021] In the scheme, the above structure is adopted, the limiting block is clamped with the capillary tube, and the elastic sleeve is sleeved on the capillary tube from the outside of the limiting part. On the one hand, the clamping effect of the elastic sleeve can be avoided due to elastic deformation, and on the other hand, the two ends of the elastic sleeve are fixed by the boss and the limiting block, and the movement of the elastic sleeve itself is also limited.

[0022] Preferably, the working end of the tool bit is a T-shaped working end.

[0023] In the scheme, the above structure is adopted, and a preferred setting mode of the tool bit electrode is provided.

[0024] Preferably, the boss has an inclined transition slope away from the side of the working end.

[0025] In the scheme, the above structure is adopted, and a guide surface is formed by the transition slope. The transition slope is inclined and continuous, so that the elastic sleeve can be sleeved on the boss.

[0026] Preferably, the tool bit has multiple specifications with different lengths, and the disposable high-frequency incision cutter can be formed by welding any one of the tool bits of the specifications with the capillary tube of the connecting pipe.

[0027] In the scheme, the above structure is adopted, the tool bit is welded with the capillary tube, and multiple types of tool bits can be selected. On the one hand, compared with the structure of setting a movable mechanism on the tool bit or detachable connection of the tool bit, welding connection can reduce the complexity of the product structure and improve the stability of the product. On the other hand, the disposable high-frequency cutting knife with different types of tool bits welded can be selected for use in different situations, which is more convenient.

[0028] Preferably, the photosensitive position of the disposable high-frequency cutting knife is provided with a block structure.

[0029] In the embodiment, the above structure is adopted, and the newly added block structure replaces the original encapsulation process, which is better in cleanliness and more in line with medical standards.

[0030] The utility model discloses a positive progress effect lies in: a disposable high frequency incision knife, it includes the knife head and connecting pipe, the knife head includes working end and connecting end, the connecting end includes the boss that projects outward along its periphery, the connecting pipe includes capillary steel pipe and elastic sleeve, the capillary steel pipe is connected the connecting end, the elastic sleeve is set up on the boss and is in interference fit with the boss. The tail of this high frequency knife head projects slightly to form the boss, so that it can be with the interference fit of connecting pipe, when installing, the elastic sleeve of connecting pipe is set up on the boss, and elastic deformation is generated, and the complete cooperation is formed to ensure that there is no gap between the knife head and elastic sleeve, and the knife head does not shake relative to elastic sleeve during operation, increases product stability, leakproofness and insulation. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 For the disposable high frequency incision knife of the utility model embodiment.

[0032] Figure 2 For Figure 1 The enlarged view of A part in the middle.

[0033] Figure 3 For the internal structure schematic view of handle of this embodiment.

[0034] Figure 4 For the structure schematic view of limit block of this embodiment.

[0035] Figure 5 For the structure schematic view of knife head of this embodiment.

[0036] Figure 6 For the structure schematic view of the connecting state of knife head and capillary steel pipe of this embodiment.

[0037] Figure 7 For the structure schematic view of connecting pipe of this embodiment.

[0038] Figure 8 For the structure schematic view of different specifications of knife head of this embodiment.

[0039] EXPLANATION OF REFERENCE NUMERALS:

[0040] Handle 1

[0041] Limit slot 11

[0042] Limit block 12

[0043] First part 121

[0044] First arc-shaped groove 1211

[0045] Second part 122

[0046] Second arc-shaped groove 1221

[0047] connecting pipe 2

[0048] capillary steel pipe 21

[0049] elastic sleeve 22

[0050] knife head 3

[0051] working section 301

[0052] connecting end 302

[0053] boss 31

[0054] limiting disc 32

[0055] electrode 33

[0056] excessive bevel 34

[0057] terminal pipe 4

[0058] water supply connector 41

[0059] power supply connector 42 DETAILED DESCRIPTION

[0060] The utility model will be described in detail below with reference to the preferred embodiments and drawings.

[0061] As Figure 1 shown, the embodiment discloses a disposable high-frequency incision knife, which comprises a knife head 3 and a connecting pipe 2, a handle 1 and a terminal pipe 4, wherein the knife head 3 is a T-shaped knife head 3, which comprises an electrode 33; the high-frequency incision knife cuts tissues by the heat generated by high-frequency current; wherein the high-frequency incision knife head 3 of the embodiment further comprises a liquid outlet mechanism, which can spray liquid beams, is used for injecting water under mucous membrane tissues, makes mucous membrane and subcutaneous tissues swell, and creates a good operation environment for electric cutting; in addition, when the water beam pressure is above 40 Bar, the liquid outlet mechanism can also cut water beams.

[0062] The knife head 3 of the embodiment comprises a working end and a connecting end 302, and the working section 301 is the outermost end. Figure 5 The working end is a T-shaped working end; the electrode 33 and the liquid outlet mechanism are arranged at the working end; the liquid outlet mechanism is arranged at the center of the T-shaped working end outwardly; the connecting end 302 is an end facing the connecting pipe 2; the connecting end 302 comprises a boss 31 which protrudes outwardly along the circumference thereof. Figure 6 、 Figure 7As shown, the connecting end 302 includes a capillary steel tube 21 and an elastic sleeve 22, the capillary steel tube 21 is connected to the connecting end 302 (as shown in Figure 6 As shown, the elastic sleeve 22 is sleeved on the boss 31 and is in interference fit with the boss 31.

[0063] The tail of the head 3 of the high-frequency knife is slightly convex to form a boss 31, so that it can be in interference fit with the connecting tube 2. When the connecting tube 2 is installed, the elastic sleeve 22 of the connecting tube 2 is sleeved on the boss 31 and is elastically deformed to form a complete fit to ensure that there is no gap between the head 3 and the elastic sleeve 22, so that the head 3 does not shake relative to the elastic sleeve 22 during the operation, thereby increasing the stability, sealing and insulation of the product. At the same time, the head 3 reduces several parts compared with the prior art, but has better sealing, and greatly saves the cost.

[0064] As shown in Figure 2 , Figure 5 As shown, the connecting end 302 further includes a limiting disc 32, which is arranged on the boss 31 and protrudes outward from the circumference of the boss 31, and the end of the elastic sleeve 22 abuts against the limiting disc 32. The limiting disc 32, the boss 31 and the rod of the head 3 are integrally formed without the need for assembly processes such as welding. The limiting disc 32 is arranged at the end of the boss 31 and forms a stepped structure with the boss 31 and the rod of the head 3.

[0065] The limiting disc 32 is a structure further protruding from the original boss 31, which can limit the elastic sleeve 22 and prevent the relative movement between the elastic sleeve 22 and the head 3 and the capillary steel tube 21 in the length direction, and further improve the sealing and ensure the cleanliness inside the elastic sleeve 22, so that the contaminants cannot enter the inside of the connecting tube 2 in the reverse direction during the operation.

[0066] In other embodiments, the three parts can also be separate parts which are assembled by threads or welding, but the cost is higher and the processing is more complicated.

[0067] As shown in Figure 1 The diameter of the elastic sleeve 22 is constant along the length direction, and the side of the elastic sleeve 22 facing the connecting end 302 is in interference fit with the boss 31 through elastic deformation. The elastic sleeve 22 is not designed to be variable in diameter, but is connected to the head 3 in close fit through elastic deformation. Compared with the traditional structure connected by hole expansion and internal thread, the head structure is greatly reduced. The process steps of hole expansion and internal thread are saved, and the parts of the head are reduced, thereby further saving the cost. In the embodiment, the elastic sleeve 22 is preferably made of rubber, which has elasticity and insulation and can well realize the functions of the elastic sleeve 22. In other embodiments, other materials with elasticity, good sealing and insulation can also be selected.

[0068] As shown in Figure 1 ,Figure 3 As shown in the drawings, the disposable high-frequency incision knife further comprises a handle 1, and the connecting pipe 2 passes through and is fixed in the handle 1. The handle 1 is arranged at the end of the connecting pipe 2 and has a large volume. The handle 1 is used for holding the high-frequency incision knife during the operation, facilitating the operation, and the end of the connecting pipe 2 is fixed in the handle 1, and after the head is fixed by the boss 31 and the limiting disc 32, the tail is also fixed, further improving the stability of the overall structure. In the embodiment, the handle 1 is flat as a whole, and the end towards the knife head 3 is smaller than the end of the principle knife head 3 and has a smooth shape, facilitating holding. In other embodiments, it can be arranged in any other conventional shape convenient for holding.

[0069] In the embodiment, the handle 1 is not provided with a switch device, so that the internal structure is simpler, the cost is saved, and the LOGO is integrally formed, thereby saving the silk printing process.

[0070] As shown in the drawings, Figure 3 , Figure 4 As shown in the drawings, the handle 1 is fixed with the connecting pipe 2 through the limiting block 12, the limiting block 12 is fixed in the handle 1, the limiting block 12 comprises the first part 121 and the second part 122 arranged oppositely, the first part 121 and the second part 122 are provided with the first arc-shaped slot 1211 and the second arc-shaped slot 1221, and the two sides of the connecting pipe 2 are respectively clamped into the first arc-shaped slot 1211 and the second arc-shaped slot 1221 and are clamped and fixed by the first part 121 and the second part 122. Specifically, the handle 1 has the limiting slot 11 inside, the connecting pipe 2 penetrates the handle 1 along the length direction of the handle 1 and passes through the limiting slot 11, the shape of the limiting slot 11 matches the limiting block 12 spliced by the first part 121 and the second part 122, the first part 121 and the second part 122 are respectively located on the two sides of the limiting slot 11 and clamp the connecting pipe 2, and the two sides of the connecting pipe 2 are respectively embedded in the first arc-shaped slot 1211 and the second arc-shaped slot 1221 and are clamped. The handle 1 is assembled and fixed with the connecting pipe 2 through the limiting block 12 arranged in the handle 1, and the limiting effect on the connecting pipe 2 is better. The limiting block 12 is arranged in a split manner, the connecting pipe 2 is clamped and fixed by clamping, the structure is simple, and the fixing effect is strong.

[0071] In the embodiment, the first arc-shaped slot 1211 and the second arc-shaped slot 1221 have the same hole diameter, but the centers are arranged in an up-down staggered manner. By arranging the centers of the first arc-shaped slot 1211 and the second arc-shaped slot 1221 in an up-down staggered manner, when the capillary steel pipe 21 is clamped, the capillary steel pipe 21 can be clamped and fixed by the forces in opposite directions on the upper and lower sides of the capillary steel pipe 21. In other embodiments, other conventional clamping methods can also be used.

[0072] In the embodiment, the limiting block 12 is clamped and fixed with the capillary steel pipe 21 of the connecting pipe 2, and the elastic sleeve 22 is arranged outside the limiting block 12. The limiting block 12 is clamped on the capillary steel pipe 21, and the elastic sleeve 22 is sleeved on the capillary steel pipe 21 from outside the limiting part. On the one hand, it can avoid the clamping on the elastic sleeve 22 due to elastic deformation to reduce the clamping effect. On the other hand, the two ends of the elastic sleeve 22 are fixed by the boss 31 and the limiting block 12, which also limits the movement of the elastic sleeve 22 itself.

[0073] As shown in Figure 5 , Figure 7 , the boss 31 away from the working end side has an inclined excess inclined surface 34. The guide surface is formed by the excess inclined surface 34. The excess inclined surface 34 is inclined and continuous, which facilitates the elastic sleeve 22 to be sleeved on the boss 31.

[0074] As shown in Figure 8 , the tool bit 3 has multiple specifications with different lengths. The disposable high-frequency incision knife can be formed by welding one tool bit 3 of any one specification with the capillary steel pipe 21 of the connecting pipe 2. Specifically, in the embodiment, four different types of tool bits 3 are displayed, and the lengths of these tool bits 3 are different. The tool bit 3 is welded with the capillary steel pipe 21 to form a disposable high-frequency incision knife, and multiple types of tool bits 3 can be selected. On the one hand, compared with the structure of setting a movable mechanism on the tool bit 3 or the structure of detachable connection of the tool bit 3, the welding connection can reduce the complexity of the product structure and improve the stability of the product. On the other hand, when different situations are encountered, different types of tool bits 3 can be selected to form a disposable high-frequency incision knife, which is more convenient.

[0075] In addition, the photosensitive position of the disposable high-frequency incision knife of the embodiment is replaced by the newly added block structure instead of the original rubber coating process. The newly added block structure has better cleanliness and is more in line with medical standards.

[0076] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example. The protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application. However, these changes and modifications all fall within the protection scope of the present application.

Claims

1. A disposable high frequency scalpel, characterized by comprising: The disposable high-frequency incision knife comprises a blade head and a connecting pipe, The blade head comprises a working end and a connecting end, and the connecting end comprises a boss protruding outward in the circumferential direction; The connecting pipe comprises a capillary steel pipe and an elastic sleeve, the capillary steel pipe is connected to the connecting end, and the elastic sleeve is sleeved on the boss and is in interference fit with the boss.

2. The disposable high frequency dissecting knife according to claim 1, wherein The connecting end further comprises a limiting disc, the limiting disc is arranged on the boss and protrudes outward in the circumferential direction of the boss, and the end of the elastic sleeve abuts against the limiting disc.

3. The disposable high frequency dissecting knife according to claim 1, wherein The diameter of the elastic sleeve is constant along the length direction, and the side of the elastic sleeve towards the connecting end is in interference fit with the boss through elastic deformation.

4. The disposable high frequency dissecting knife according to claim 1, wherein The disposable high-frequency incision knife further comprises a handle, the connecting pipe passes through the handle and is fixed to the handle.

5. The disposable high frequency dissecting knife according to claim 4, wherein The handle is fixed to the connecting pipe through a limiting block, the limiting block is fixed in the handle, the limiting block comprises oppositely arranged first and second parts, the first and second parts are provided with first and second arc-shaped grooves, and the two sides of the connecting pipe are respectively clamped into the first and second arc-shaped grooves and are clamped and fixed by the first and second parts.

6. The disposable high frequency dissecting knife according to claim 5, wherein The centers of the first and second arc-shaped grooves are arranged in an up-down staggered manner; and / or, The limiting block is clamped and fixed to the capillary steel pipe of the connecting pipe, and the elastic sleeve is arranged outside the limiting block.

7. The disposable high frequency dissecting knife according to claim 1, wherein The working end of the blade head is a T-shaped working end.

8. The disposable high frequency dissecting knife according to claim 1, wherein The side of the boss away from the working end has an inclined excess bevel.

9. The disposable high frequency dissecting knife according to claim 1, wherein The blade head has multiple specifications with different lengths, and the disposable high-frequency incision knife can be formed by welding any one of the blade heads of the specifications to the capillary steel pipe of the connecting pipe.

10. The disposable high frequency dissecting knife according to claim 1, wherein A block structure is arranged at a photosensitive position of the disposable high-frequency incision knife.

Images