CN210408549U - Scalpel and structure of scalpel cutting edge - Google Patents

Abstract

The utility model provides a scalpel and structure of scalpel cutting edge, this scalpel includes: the knife handle and the sheet-shaped knife body are connected with the knife handle; the knife body adopts a double-edge straight knife structure, the two knife edges are positioned at the two sides of the knife body, and the knife edges at the two sides are gradually folded from one end of the knife body to the other end of the knife body to form a sharp knife tip. In the process of performing the operation, a pen holding type holding method or a reverse picking type holding method is adopted, the tool tip of the scalpel is inserted into the focus part, and then a cutting opening is gradually enlarged in a back picking cutting mode; the embodiment of the utility model provides a knife tip of scalpel is thin, is convenient for pierce the focus position, and the twolip face structure that possesses has reduced operating procedure at the in-process of making a round trip to choose the cutting, and the depth of piercing and the length of cutting cut of the more accurate control cutting cut of the in-process of being convenient for operate.

Description

Scalpel and structure of scalpel cutting edge

Technical Field

The embodiment of the utility model provides a relate to the medical equipment field, concretely relates to scalpel and structure of scalpel cutting edge.

Background

During medical procedures, there are some situations where accurate control of the incision depth and width is required, such as: a surgical treatment method for stenosing tenosynovitis. Stenotic tenosynovitis refers to chronic aseptic inflammation of the tendon sheath caused by mechanical abrasion, and is one of the common diseases in outpatient department of orthopedics. From Lorthi l ir in 1958, the method for percutaneous incision of stenotic tendon sheaths by using a tendon knife to Shaw and Rueylaue in 1992 for the first time is improved by Lorthiioi, and the method is characterized in that a trolley is made by using a small grooved hemangioma needle, during the operation, a trolley is hooked for protection, and then the trolley is cut along the small grooved hemangioma needle by using a bending knife, so that the operation is complex, the bleeding amount is large, the wound healing is slow, and the recurrence rate is high.

In the existing operation treatment method, the scalpel mostly adopts a single-edge structure, the depth of the lower knife is not well mastered in the using process of the scalpel, the width of the knife edge is not easy to control, and meanwhile, due to the single-edge structure, when the focus needs to be cut back and forth, the operation is complex, accidental injury is easy to generate, and the like.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a structure of scalpel and scalpel cutting edge solves the problem that the scalpel can not accurately control lower sword degree of depth and edge of a knife length among the prior art.

In order to solve the above problem, an embodiment of the present invention provides a scalpel, which includes: the knife handle and the sheet-shaped knife body are connected with the knife handle;

the knife body is of a double-edge straight knife structure, the two cutting edges are respectively positioned on two sides of the knife body, and the two cutting edges are gradually folded from one end of the knife body to the other end of the knife body to form a sharp knife tip.

Optionally, the blade is bilaterally symmetrical.

Optionally, the knife body further comprises a scale for observing the penetration depth of the knife body.

Optionally, the blade on the blade is of a double-blade-surface structure, and the width of the blade surface is the same as the thickness of the blade.

Optionally, the edges and corners of the side surface of the knife handle are processed by fillets, and four edges and corners are polished into flat arcs.

Optionally, the knife handle further comprises anti-skid grains.

Optionally, the connection mode of the knife handle and the knife body is a detachable structure or an integrated structure.

Optionally, when the connection mode of the knife handle and the knife body adopts a detachable structure, the knife handle and the knife body are connected in any one of a buckle mode, a thread mode and a bolt mode.

Optionally, the scalpel is made of 440C stainless steel material.

Further, the embodiment of the utility model provides a still provide a structure of scalpel cutting edge, the structure of this scalpel cutting edge includes: the blade consists of two blade surfaces which are symmetrical up and down, the cross section of each blade surface is arc-shaped, and the arc length of each arc is the same as the thickness of the blade body;

the structure of the scalpel cutting edge is applied to the scalpel.

The embodiment of the utility model provides a beneficial effect is:

the embodiment of the utility model provides a scalpel, this scalpel includes: the knife body adopts a double-edge straight knife structure, and two cutting edges are positioned on two sides of the knife body and gradually furled from one end of the knife body to the other end of the knife body to form a sharp knife tip. The scalpel provided by the embodiment of the utility model has a sharp tool point, and the scalpel is vertically penetrated into the focus part by adopting a pen holding type holding method or a reversed picking type holding method during surgery, and the depth of a cutting opening is easier to master by adopting the penetrating method compared with a cutting method; and simultaneously, the embodiment of the utility model provides a scalpel adopts the twolip structure, and after the scalpel stabbed and focus during the operation, the width of control cutting opening that the method that adopts to come back to choose the cutting can be more accurate.

Further, the embodiment of the utility model provides a still provide a structure of scalpel cutting edge, the cross section of the blade face structure of this cutting edge is convex, and the arc length of blade face is the same with the thickness of blade, and the blade face mainly used of this structure cuts ligament class tissue, cuts ligament tissue along the flexible direction of ligament during the use, and the cutting edge can obviously reduce to ligament tissue's damage to reduce the amount of bleeding of wound, reduce the healing time of wound.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a scalpel according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a scalpel including a graduated scale according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a scalpel including anti-slip features according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a scalpel adopting a detachable structure according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a cutting edge of a scalpel according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a scalpel according to a third embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, in the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present invention will now be further explained by way of the detailed description in conjunction with the drawings.

The first embodiment is as follows:

referring to fig. 1, fig. 1 shows a schematic structural diagram of a scalpel provided by an embodiment of the present invention, the scalpel includes: the knife comprises a knife handle 1 and a sheet-shaped knife body 2 connected with the knife handle 1; the knife body 2 is of a double-edge straight knife structure, the left side and the right side of the knife body 2 are respectively provided with a cutting edge 3, and the cutting edges 3 on the left side and the right side are gradually folded from the upper end to the lower end of the knife body 2 to form a sharp knife tip 4.

This use novel embodiment provides's scalpel, the use step in practical application includes: firstly, the tool nose is penetrated into the focus part, then the length of the cutting opening is gradually enlarged in a back picking and cutting mode, and the depth of the cutting opening and the length of the cutting opening can be accurately controlled by adopting the steps to carry out the operation. It can be understood that the scalpel provided by the embodiment of the present invention can also adopt a common cutting mode to perform the operation.

Optionally, the knife body 2 is bilaterally symmetrical, the bilaterally symmetrical knife body structure is beneficial to controlling the shape of the knife edge, and when the scalpel cuts a focus back and forth, the symmetrical knife body shape can ensure that the cutting force in two directions is similar, so that the accuracy of controlling the length of the knife edge is enhanced.

It should be noted that the structure of the scalpel blade provided by the embodiment of the present invention is not limited to the above-mentioned symmetrical structure, but also includes some asymmetrical structures, for example, when the hardness of one side of the focal tissue is greater than that of the other side, the structure of the scalpel blade may adopt a structure in which the angle of the blade on one side is large and the angle of the blade on the other side is small, the side with the large blade angle corresponds to the side with the large focal tissue hardness, and the side with the small blade angle corresponds to the side with the small focal tissue hardness; when the knife body penetrates into the focal tissue, the pressure of the same cutting force on the tissue is higher at the side with the large angle of the knife edge, so that the tissue with higher hardness can be conveniently cut, and the pressure of the same cutting force on the tissue is reduced and the tissue cutting force is increased at the side with the small angle of the knife edge; the adoption of the asymmetrical knife body structure enables the force applied to the scalpel by the arm to be close to each other as much as possible in two back-and-forth directions, thereby being beneficial to better controlling the length of the cutting opening.

In another embodiment, in order to control the depth of the cutting opening more intuitively and accurately during the operation, the scalpel body 2 of the scalpel provided by the embodiment of the present invention further comprises a graduated scale 5, and the structure of the graduated scale is shown in fig. 2. The graduated scale 5 begins by knife tip 4 on the blade 2, and every one section distance mark scale, this distance include 1MM, 2MM and 5MM arbitrary one kind, set up graduated scale 5 on the blade and can let the operation process become more directly perceived, the depth of pricking of knowing the scalpel that can be accurate constantly, the degree of depth of accurate grasp cutting opening. It can be understood that fig. 2 shows a case where the scale 5 is disposed on the blade 2 having a symmetrical structure, in which case, when the blade 2 has an asymmetrical structure, the position of the scale changes accordingly, and the scale 5 is led out from the blade tip 4 having the changed position.

The embodiment of the utility model provides a scalpel, cutting edge 3 that sets up on blade 2 are the twolip face structure, and both sides respectively are provided with a cutting edge around cutting edge 3 promptly, and the cutting edge of two sides intersects the sharp blade point of formation in the position in the middle of blade 2's thickness. The width of the blade face on one side of the blade 3 of the scalpel provided by the embodiment is the same as the thickness of the blade body 2, that is, when the back degree of the blade body 2 is 1MM to 1.5MM of the thickness of a common scalpel, the width of the blade face on one side of the blade 3 is 1MM to 1.5MM correspondingly. On a common scalpel, the width of the blade face of the cutting edge on the scalpel body is usually far larger than the thickness of the scalpel body, because the longer blade face can enable the blade edge on the cutting edge to become sharper, the tissue can be conveniently and rapidly cut, but the cutting edge adopting the structure can increase the damage degree to the tissue in the cutting process, and the strength of the cutting edge is reduced and the use cost is increased due to the reduction of the included angle of the blade faces on the two sides of the blade edge; the blade formed by the upper and lower blade surfaces on the blade of the scalpel provided by this embodiment is larger than the included angle of the blade formed by the upper and lower blade surfaces on the blade of the ordinary scalpel, so that the damage to the tissue can be reduced when the tissue is cut, and the strength of the blade is also larger than that of the ordinary scalpel.

Further, in this embodiment, when handle of a knife 1 is rectangular shape slice, can do the fillet with four edges and corners of the side of handle of a knife 1 and handle, polish into the flat arc with four edges and corners, can avoid the too sharp fish tail that leads to of edges and corners when gripping the scalpel like this, also can obviously promote simultaneously and grip and feel. Meanwhile, in the scalpel provided by the embodiment of the utility model, the shape of the scalpel handle 1 is not limited to the strip sheet shape, but also can be the shape of the scalpel handle common in the scalpel, for example, the handle 1 is processed by arc at the tail part, so that the hand feeling can be further improved; can also make circular or oval with handle of a knife 1 simultaneously, because the embodiment of the utility model provides a scalpel is when carrying out the operation, recommends to adopt the pen-holding formula to hold or the formula of choosing is held instead, is favorable to controlling the incision degree of depth like this to and be convenient for grip the scalpel and carry out the choosing of making a round trip and cut the action, do circular or oval be convenient for more grip with handle of a knife 1 this moment.

Further, in this embodiment, anti-slip lines can be further arranged on the handle 1 of the scalpel, so that the stability of the scalpel in holding can be improved. Specifically, the anti-slip pattern may be a common cross bar shape on the scalpel handle, as shown in fig. 3, and similarly, other anti-slip patterns may be adopted, for example, a prismatic anti-slip pattern, a wavy-line-shaped anti-slip pattern, and a serrated anti-slip pattern. Optionally, in order to further improve the friction between the hand and the handle during holding and improve the holding stability, the surface of the handle 1 may be subjected to a matte treatment, and the smooth surface of the handle 1 is made into a frosted surface.

The embodiment of the utility model provides a scalpel mainly includes: the knife handle 1 and the knife body 2 are arranged, so that the connection relationship between the knife handle 1 and the knife body 2 comprises a detachable structure and an integrated structure. The detachable structure is that the knife handle 1 and the knife handle 2 are separately manufactured, the knife handle 1 and the knife body 2 are assembled and disassembled in a certain mode, the connection mode is a common structure on a daily-used scalpel, the detachable structure has the advantage that the knife handle 1 and the knife body 2 are separated, one knife body can be matched with the knife handle in various structures, convenience in the using process of the scalpel is improved, meanwhile, when the knife body needs to be replaced, the knife handles do not need to be replaced together, practicability is improved, and the use cost is reduced; adopt detachable structure still can bring following problem simultaneously, handle of a knife 1 and blade 2 have the cooperation precision problem, because the components of a whole that can function independently design that handle of a knife 1 and blade 2 adopted connects through certain mode again, can greatly reduced handle of a knife 1 and blade 2's connection steadiness. Adopt the integral type structure can be fine avoid above-mentioned problem, handle of a knife 1 and blade 2 structure as an organic whole, consequently, do not have the problem of equipment precision, simultaneously an organic whole structure can make scalpel's structural strength become stronger again, the connected mode that adopts the integral type structure can play more important effect in some operations that have special requirement.

Optionally, when the knife handle 1 and the knife body 2 of the scalpel provided in this embodiment adopt a detachable mechanism, the connection mode of the knife handle 1 and the knife body 2 includes: any one of a snap-fit connection, a threaded connection and a pin-type connection. As shown in fig. 4, a schematic diagram of a bayonet connection manner adopted by the knife handle 1 and the knife body 2 is shown, the bayonet connection manner is a relatively common connection manner in a scalpel, when assembling, a fixing hole on the knife body 2 is placed on a convex matching part on the knife handle 1, the knife body 2 is pulled upwards towards the upper end of the knife handle 1 to fix the knife body 2 with the knife handle 1, and when disassembling, the above steps are adopted to perform opposite actions and can be completed. In the embodiment, the knife body 1 and the knife handle 2 can also adopt other connection modes, the threaded connection is similar to the connection mode of a nut and a bolt, and the knife handle 1 and the knife body 2 fix the knife handle 1 and the knife handle 2 in a rotating mode; when the bolt connection is adopted, the mode that the knife body 2 is inserted into the matching hole on the knife handle 1 is generally adopted.

Further, the utility model provides a scalpel is made by 440C stainless steel material, and 440C stainless steel has the highest hardness among all stainless steel, the heat-resisting steel, and 440C stainless steel is a high carbon high chromium martensite type stainless steel. The carbon content is 1.0 percent, and the chromium content is 17 percent. Therefore, the application range is mainly used for manufacturing bearing parts working in a corrosive environment and a non-lubricating strong oxidizing atmosphere; meanwhile, 440C has better high-temperature dimensional stability, so that the steel can also be used as corrosion-resistant high-temperature bearing steel; in addition, the method can be used for manufacturing high-quality cutters such as medical scalpels, scissors, nozzles, bearings and the like.

The scalpel body of the scalpel provided in the embodiment has a double-edge structure, and the scalpel tip is sharp, so that when an operation is performed, a pen holding type holding method or a reversed picking type holding method is adopted, the scalpel tip penetrates into focal tissues, then the tissues are cut back and forth, and the depth and the length of a cutting opening can be controlled more accurately.

Example two:

the present embodiment provides a structure of a knife edge of a scalpel, as shown in fig. 5, the knife edge is composed of two symmetrical upper and lower edge surfaces, the cross section of each edge surface is in the shape of an arc, an arc length corresponding to the arc of the edge surface is L, a central angle corresponding to the arc is C, the thickness of the widest part of the knife edge is the same as the thickness of a knife body and is H, and the arc length L of the edge surface of the knife edge is the same as the thickness H of the knife body.

The preferred implementation of the scalpel adopting the blade structure provided by the embodiment is an operation applied to ligaments and tendons, and during the operation, the blade tip penetrates into tissues of the ligaments or the tendons, and cuts the tissues back and forth along the extending direction of the tissue textures.

The embodiment provides a structure of a scalpel cutting edge, the structural cutting surface of the cutting edge is in an arc shape, the thickness of the cutting surface is the same as that of a scalpel body, the cutting edge adopting the structure is adopted, the included angle between the two cutting surfaces of the blade edge on the cutting edge is larger, the pressure applied on tissues by the blade edge is reduced when the tissues are cut, the damage to the tissues is reduced, the bleeding amount is reduced, and the healing time of the tissues is reduced.

Example three:

in this embodiment, a specific implementation of a scalpel adopting the structure of the knife edge provided by the embodiment of the present invention is described by taking stenotic sworderings as an example.

As shown in fig. 6, the surgical knife provided in the present embodiment includes: the length, the width and the thickness of the knife handle are respectively 70MM, 9MM and 1.5MM, edges and corners of the knife handle are all processed by fillets, and the edges and corners are polished into circular arc shapes; the knife body and the knife handle are of an integrated structure, the length, the width and the thickness of the knife body are respectively 50MM, 0-9MM and 0-1.5MM, the knife body is of a double-edge straight knife structure, the blades on two sides are gradually folded from the interface of the knife handle and the knife body to the other end of the knife body to form a sharp knife tip, the included angle formed by the blades on two sides of the knife tip is about 10 degrees, the blades are of a double-edge-face structure, the blade face is arc-shaped, the central angle corresponding to the arc is 35 degrees, and the arc length of the arc is 1.5 MM; the scalpel is made of 440C stainless steel material.

Stenotic tenosynovitis is a chronic aseptic inflammation caused by mechanical abrasion of the tendon sheath, and is one of the common diseases in outpatient department of orthopedics, and is mostly seen in the flexor tendon stenosing tenosynovitis of the finger, which is mostly seen in the thumb, and is mostly found in the flexor tendon fibrous sheath canal corresponding to the metacarpal head. The finger repeated flexion and extension movement for a long time causes fibrous tissue hyperplasia at the tendon ring, and synovium edema of the sheath canal forms annular stenosis, which causes tendon adhesion and movement disorder. The fingers are mostly fixed in the straight position and cannot be bent or fixed in the bent position and cannot be straightened.

The specific surgical procedure for the scalpel in which this embodiment is practiced is as follows: conventional disinfection, local anesthesia; the tool point of the scalpel is inserted into the surface of the pulley at the near end of the hard nodule, the pulley is broken, the surgical scalpel is back picked and cut along the far end of the tendon, the pulley is longitudinally cut off, and cutting sound can be heard; until the finger joint moves freely and the snapping embedding card disappears; the function of the postoperative tissue is exercised as early as possible, local adhesion is prevented, and function recovery is promoted.

The scalpel provided by the embodiment has the advantages that the point of the scalpel is thin, the scalpel does not need to be sutured after operation, and a small dressing is used for dressing; meanwhile, the scalpel in the embodiment is made of the 440C scalpel, so that the scalpel is good in toughness and hardness, the scalpel has certain elasticity, a knife tip is not easy to break, the knife edge face is short, the structure of the knife edge is special, the damage to tissues is small, the bleeding amount is small, and the wound is quickly healed.

It can be seen from the above examples that there are many combinations of the embodiments of the present invention, which are only the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the embodiments of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the embodiments of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the embodiments of the present invention.

Claims (10)

1. A surgical knife, comprising: the knife comprises a knife handle and a sheet-shaped knife body connected with the knife handle;

the knife body is of a double-edge straight knife structure, the two cutting edges are respectively positioned on two sides of the knife body, and the two cutting edges are gradually folded from one end of the knife body to the other end of the knife body to form a sharp knife tip.

2. The scalpel of claim 1, wherein the blade is bilaterally symmetric.

3. The scalpel of claim 1, further comprising a scale disposed on the blade for viewing the depth of penetration of the blade.

4. The scalpel of claim 1, wherein the blade of the blade is a double-edged surface having a width that is the same as the thickness of the blade.

5. The scalpel as in claim 1, wherein the four corners of the side of the handle are rounded to form a circular arc.

6. The scalpel of claim 5, further comprising a non-slip texture on the handle.

7. The scalpel of any one of claims 1-6, wherein the handle and the body are coupled in a manner that includes a detachable configuration or an integral configuration.

8. The scalpel as defined in claim 7, wherein when the handle is detachably connected to the body, the handle is connected to the body by any one of a snap-fit manner, a screw-thread manner and a latch-pin manner.

9. The surgical knife of claim 7, wherein the surgical knife is made of 440C stainless steel material.

10. A structure for a scalpel blade, comprising: the knife edge consists of two edge surfaces which are symmetrical up and down, the cross section of each edge surface is arc-shaped, and the arc length of each arc is the same as the thickness of the knife body;

the structure of the knife edge is applied to the scalpel as claimed in any one of claims 1-9.

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