Middle ear muscle cutting knife assembly

Abstract

The utility model relates to the technical field of scalpels, and discloses a middle ear muscle cutting knife assembly which comprises a knife body and a storage box used for storing the knife body, the knife body comprises a knife handle, a knife rod and a knife head, the knife handle and the knife rod are both of a cylindrical structure, an inclined connecting rod is arranged at the end of the knife handle, the connecting rod is connected with the knife rod, and the knife head is connected with the knife rod. The tool bit is arranged at the end, away from the tool handle, of the tool bar. The whole storage box is of a square structure, the interior of the storage box is hollow, the upper portion of the storage box is open, and a cover body is arranged at the opening in a sliding mode; a plurality of groups of limiting seats are arranged on the side wall of the storage box, and the cutter bars are clamped in the limiting seats; the cutting knife provided by the utility model is used for cutting two small middle ear muscles, and the inclined connecting rod is matched with the knife rod, so that the knife head can be in a middle ear tympanic chamber when the knife handle is held by a hand, and the use is convenient; and the storage box can be used for the cutter body, so that the cutter body can be well stored, and the cutter body is prevented from being influenced by the outside.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical knives, and more particularly to a middle ear muscle cutting knife assembly. Background Art

[0002] The middle ear muscles are a group of small muscles located in the middle ear, including the tensor tympani, tensor malleus anterior, and tensor malleus posterior. Their primary function is to regulate the movement of the auditory ossicles, thereby affecting sound transmission. Contraction of these muscles is primarily controlled by the autonomic nervous system. Normally, these muscles contract naturally in response to loud noises or when ear protection is necessary, minimizing damage to the inner ear.

[0003] The middle ear muscles are located in the middle ear tympanic cavity. It is difficult to cut the muscles with a conventional scalpel during medical surgery, which causes inconvenience to the surgery. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a middle ear muscle cutting knife assembly, which has the advantage of more precise operation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a middle ear muscle cutting knife assembly, comprising: a knife body and a storage box for storing the knife body, the knife body comprising a knife handle, a knife rod, and a knife head, the knife handle and the knife rod are both cylindrical structures, and the two are arranged parallel to each other, an inclined connecting rod is provided at the end of the knife handle, the connecting rod is connected to the knife rod, and the knife head is arranged at the end of the knife rod away from the knife handle; the storage box is a square strip structure as a whole, the interior of the storage box is hollow, and the upper part is open, and a slidably installed cover is provided at the open position; several groups of limit seats are provided on the side walls of the storage box, and the knife rod is stuck in the limit seats.

[0006] As a preferred technical solution of the present invention, the inclination angle between the connecting rod and the knife handle is 42° to 48°, and the connection parts between the connecting rod and the knife handle and the knife rod are provided with a chamfered structure.

[0007] As an optimal technical solution of the present invention, the cutter head is configured as a flat structure, and the end is configured as a triangular cone; the connection part between the cutter head and the tool rod is configured as a chamfered structure, and the tip of the cutter head points to the center axis direction of the tool handle.

[0008] As a preferred technical solution of the present invention, the length of the handle is 95-105 mm, the length of the shank is 80-90 mm, the length of the cutter head is 8-12 mm, and the length of the connecting rod is 18-22 mm.

[0009] As a preferred technical scheme of the utility model, the handle is provided with a holding part, and the holding part is provided with friction lines; the handle is provided with a plurality of groups of protruding annular rings at one end close to the connecting rod.

[0010] As a preferred technical scheme of the utility model, the inner wall of the storage box is provided with a trapezoidal sliding belt, the cover body is provided with a sliding groove at both sides, and the sliding groove is clamped on the sliding belt; the lower side of the cover body is provided with a limiting groove, and the limiting block is clamped in the limiting groove.

[0011] As a preferred technical scheme of the utility model, the cover body is provided with a connecting plate which is bent downward at one end, a plurality of groups of magnetic sheets are uniformly arranged on the outer walls of the storage box and the connecting plate which are mutually adhered, and the connecting plate is correspondingly provided with metal sheets.

[0012] As a preferred technical scheme of the utility model, the limiting seat is in a U-shaped structure as a whole, the back side of the limiting seat is fixed to the side wall of the storage box through a connecting block, the lower end of the U-shaped structure of the limiting seat is provided with a horizontal supporting plate, and the upper end of the U-shaped structure of the limiting seat is provided with a limiting sheet which is in a concave arc structure.

[0013] As a preferred technical scheme of the utility model, the bottom of the storage box is provided with a plurality of supporting belts and positioning blocks, the supporting belts are in contact with the handle, and the positioning blocks are arranged in an inclined mode and are inclined to the connecting rod.

[0014] Compared with the prior art, the utility model has the advantages that the cutting knife is used for cutting two small muscles in the middle ear, the connecting rod and the knife rod are matched to make the knife head in the middle ear tympanic cavity when the handle is held, and the storage box can be used for the knife body and can well store the knife body and protect the knife body from external influences. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structure schematic view of the utility model;

[0016] Fig. 2 It is an assembly schematic view of the knife body, the storage box and the cover body of the utility model;

[0017] Fig. 3 It is an assembly schematic view of the structure storage box and the cover body of the utility model;

[0018] Fig. 4 It is an assembly schematic view of the knife body and the storage box of the utility model;

[0019] In the figure: 1, the cutter body; 11, the handle; 12, the cutter bar; 13, the cutter head; 14, the connecting rod; 15, the holding part; 16, the annular ring; 2, the storage box; 21, the sliding belt; 22, the magnetic sheet; 23, the limiting block; 24, the support belt; 25, the positioning block; 26, the buffer pad; 3, the cover body; 31, the connecting plate; 32, the sliding groove; 33, the limiting groove; 4, the limiting seat; 41, the connecting block; 42, the support plate; 43, the limiting sheet. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] As shown in the figure, the utility model provides a middle ear muscle cutting knife assembly, including: cutter body 1 and the storage box 2 for storing cutter body 1, the cutter body 1 includes handle 11, cutter bar 12, cutter head 13, the handle 11, cutter bar 12 all are cylindrical structure, and both are parallelly arranged, the end of handle 11 is provided with the inclined connecting rod 14, the connecting rod 14 is connected with cutter bar 12, the cutter head 13 is arranged at the end of cutter bar 12 away from handle 11, the storage box 2 is overall square strip structure, the inside of storage box 2 is hollow, and the upper part is open, is provided with the cover body 3 of sliding installation at the open, the side wall of storage box 2 is provided with several sets of limiting seat 4, the cutter bar 12 is clamped in limiting seat 4. Figs. 1 to 4 Among them, the inclination angle between connecting rod 14 and handle 11 is 42 ° ~ 48 °, and the connecting part between connecting rod 14 and handle 11, cutter bar 12 is provided with a fillet structure; the inclined connecting rod 14 can make the handle 11, cutter bar 12 not on the same central axis, so that the guide rod cutter bar 12 is inserted into the middle ear tympanic cavity.

[0022] Among them, the cutter head 13 is provided as flat structure, and the end is provided as triangular taper; the connecting part of cutter head 13 and cutter bar 12 is provided as a fillet structure, and the tip of cutter head 13 points to the central axis direction of handle 11; the two sides and the tip of triangular taper cutter head 13 all have a blade, which is convenient for cutting use.

[0023] Among them, the length of handle 11 is 95 ~ 105 mm, the length of cutter bar 12 is 80 ~ 90 mm, the length of cutter head 13 is 8 ~ 12 mm, and the length of connecting rod 14 is 18 ~ 22 mm.

[0024]

[0025] ​The handle 11 is provided with a holding part 15, and the holding part 15 is provided with a friction pattern; the handle 11 is provided with a plurality of groups of protruding annular rings 16 near one end of the connecting rod 14. The holding part 15 provided with the friction pattern is more convenient for a user to hold, and enough friction force is ensured to hold.

[0026] The inner wall of the storage box 2 is provided with a trapezoidal sliding belt 21, the cover 3 is provided with a sliding groove 32 on both sides, the sliding groove 32 is matched and clamped on the sliding belt 21, the cover 3 is provided with a limiting groove 33 on the lower side, the limiting block 23 is arranged on the side plate at the lower part of the cover 3, and the limiting block 23 is matched and clamped in the limiting groove 33. The cover 3 is clamped on the sliding belt 21 through the sliding groove 32, so that the cover 3 can only move along the length direction of the sliding groove 32; the limiting block 23 is clamped in the limiting groove 33, so that the cover 3 is prevented from falling off the storage box 2.

[0027] The connecting plate 31 is arranged at one end of the cover 3 and is bent downward, a plurality of groups of magnetic sheets 22 are uniformly arranged on the outer walls of the storage box 2 and the connecting plate 31 which are in close contact with each other, and metal sheets are correspondingly arranged on the connecting plate 31. The magnetic sheets 22 and the metal sheets on the connecting plate 31 are mutually adsorbed. The connecting plate 31 can play an adsorption role when the cover 3 is folded, and the cover 3 is prevented from sliding and opening under the condition of no external force.

[0028] The limiting seat 4 is in a U-shaped structure as a whole, the back side of the limiting seat 4 is fixed to the side wall of the storage box 2 through a connecting block 41, the lower end of the U-shaped structure of the limiting seat 4 is provided with a horizontal supporting plate 42, the upper end of the U-shaped structure of the limiting seat 4 is provided with a limiting sheet 43, and the limiting sheet 43 is in a concave arc-shaped structure. The supporting plate 42 is used for placing the knife rod 12, the arc-shaped limiting sheet 43 has a large opening on one side to facilitate clamping of the knife rod 12, and after clamping, the limiting sheet 43 is squeezed and clamped on the inner side of the U-shaped structure of the limiting seat 4, and at this time, the limiting sheet 43 plays a role of limiting clamping.

[0029] The bottom of the storage box 2 is provided with a plurality of supporting strips 24 and a positioning block 25, the supporting strips 24 are in contact with the handle 11, the positioning block 25 is arranged in an inclined manner, the positioning block 25 is inclined to the connecting rod 14, and the positioning block 25 is provided with a buffer pad 26 made of rubber material. The supporting strips 24 provide support for the handle 11, so that the handle 11 and the knife rod 12 can be kept horizontal, and the positioning block 25 clamps the connecting rod 14.

[0030] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A middle ear muscle cutting knife assembly, characterized in that: The utility model comprises: a knife body (1) and a storage box (2) for storing the knife body (1), wherein the knife body (1) comprises a knife handle (11), a knife rod (12), and a knife head (13), wherein the knife handle (11) and the knife rod (12) are both cylindrical structures and are arranged parallel to each other, an inclined connecting rod (14) is arranged at the end of the knife handle (11), and the connecting rod (14) is connected to the knife rod (12), and the knife head (13) is arranged at the end of the knife rod (12) away from the knife handle (11); the storage box (2) is in a square strip structure as a whole, the storage box (2) is hollow inside, and the upper part is open, and a slidably installed cover (3) is arranged at the open part; a plurality of groups of limit seats (4) are arranged on the side wall of the storage box (2), and the knife rod (12) is clamped in the limit seats (4).

2. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: The inclination angle between the connecting rod (14) and the knife handle (11) is 42° to 48°, and the connection parts between the connecting rod (14), the knife handle (11) and the knife rod (12) are provided with a rounded corner structure.

3. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: The cutter head (13) is configured as a flat structure, and the end portion is configured as a triangular cone; the connection portion between the cutter head (13) and the cutter rod (12) is configured as a rounded structure, and the tip of the cutter head (13) points to the center axis direction of the handle (11).

4. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: The length of the knife handle (11) is 95-105 mm, the length of the knife rod (12) is 80-90 mm, the length of the knife head (13) is 8-12 mm, and the length of the connecting rod (14) is 18-22 mm.

5. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: The knife handle (11) is provided with a gripping portion (15), and the gripping portion (15) is provided with friction lines; and one end of the knife handle (11) close to the connecting rod (14) is provided with a plurality of groups of raised annular rings (16).

6. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: A trapezoidal sliding belt (21) is provided on the inner wall of the storage box (2), and sliding grooves (32) are provided on both sides of the cover body (3), and the sliding grooves (32) are engaged with and clamped on the sliding belt (21); a limiting groove (33) is provided on the lower side of the cover body (3), and a limiting block (23) is provided on the side plate of the storage box (2) at the lower part of the cover body (3), and the limiting block (23) is engaged with and clamped in the limiting groove (33).

7. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: One end of the cover (3) is bent downward to be provided with a connecting plate (31); a plurality of groups of magnetic sheets (22) are evenly provided on the outer wall of the storage box (2) and the connecting plate (31) where the storage box (2) and the connecting plate (31) are in contact with each other; a metal sheet is correspondingly provided on the connecting plate (31); and the magnetic sheets (22) and the metal sheets on the connecting plate (31) are mutually adsorbed.

8. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: The limiting seat (4) is of a U-shaped structure as a whole. The back side of the limiting seat (4) is fixed to the side wall of the storage box (2) through a connecting block (41). A horizontal support plate (42) is provided at the lower end of the U-shaped structure of the limiting seat (4). A limiting piece (43) is provided at the upper end of the U-shaped structure of the limiting seat (4). The limiting piece (43) is provided in a concave arc structure.

9. The middle ear muscle cutting knife assembly according to claim 1, characterized in that: The bottom of the storage box (2) is provided with a plurality of support belts (24) and positioning blocks (25), wherein the support belts (24) are in contact with the knife handle (11); the positioning blocks (25) are arranged as a whole at an inclination, and the positioning blocks (25) and the connecting rod (14) are inclined with each other, and a buffer pad (26) made of rubber material is provided on the positioning blocks (25).

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