Pen point bending structure and electrotome pen with bendable pen point

Abstract

The utility model discloses a pen point bending structure and an electric knife pen with a bendable pen point. The electric knife pen comprises a cam and a wheel disc which are coaxial. Radial grooves are formed in the wheel disc in the radial direction. A pen holder of the electric knife pen is arranged in the radial groove along the axial direction; the cam is linked by a first motor through a first rotating shaft, and pushes the penholder to bend along the radial direction through the rim of the cam; the wheel disc is linked by a second motor through a second rotating shaft and pushes the pen holder to bend in the circumferential direction through the groove wall of the radial groove. The shell is arranged at the end of the electric knife pen, the bending device composed of the wheel disc and the cam is arranged in the shell, the wheel disc pushes the pen holder to deflect and bend in the circumferential direction, the cam pushes the pen holder to deflect and bend in the radial direction, then the pen point of the electric knife pen can bend and deflect within a certain amplitude range, and operation of an operator is facilitated; therefore, corresponding treatment can be carried out on corresponding parts, the treatment efficiency is improved, and high practicability and wide applicability are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a pen head bending structure, in particular to a pen head bending structure and a flexible pen head electric scalpel pen, belonging to the technical field of medical instruments. BACKGROUND

[0002] The electric scalpel pen is an electric surgical instrument that replaces the mechanical scalpel for tissue cutting. It realizes the separation and coagulation of the body tissue by the high-frequency high-voltage current generated by the effective electrode tip when it contacts the body, so as to achieve the purpose of cutting and hemostasis, and is widely used in surgical operations.

[0003] With the increasing maturity of endoscopic technology, single-hole thoracoscopy is widely used in the treatment of various chest diseases. Through the camera system, the visual field and angle of the operator are far superior to the visual field of traditional surgery.

[0004] The traditional electric scalpel pen or electric coagulation hook is mainly made of metal and has a linear structure. Some special operations or in the process of operation, due to the problem of operation angle, often need to change the angle, and the fixed linear structure often increases the difficulty of operation. If forced operation, it may enlarge the surgical incision and increase the damage. If the additional surgical incision range and length are added, a secondary operation will be formed. This causes the traditional electric scalpel pen to be unable to match the thoracoscopy visual field range, increasing the difficulty and risk of surgery.

[0005] Therefore, it is necessary to provide a pen head bending structure and a flexible pen head electric scalpel pen. SUMMARY

[0006] In order to solve the problems of the prior art, the purpose of the present application is to provide a pen head bending structure and a flexible pen head electric scalpel pen.

[0007] In order to achieve the above-mentioned target, the technical scheme adopted by the present application is as follows:

[0008] The pen head bending structure comprises a cam and a wheel disc coaxially; along the radial direction, the wheel disc is provided with a radial slot; the pen barrel of the electric scalpel pen is arranged in the radial slot along the axial direction;

[0009] The cam is connected by a first motor through a first rotating shaft, and the pen barrel is pushed to bend along the radial direction by the rim of the cam;

[0010] The wheel disc is connected by a second motor through a second rotating shaft, and the pen barrel is pushed to bend along the circumferential direction by the slot wall of the radial slot.

[0011] The second rotating shaft is sleeved outside the first rotating shaft and is connected by a third motor through a gear shifting device;

[0012] The gear shifting device comprises a sliding sleeve, the bottom of the sliding sleeve is provided with a first recess, and the top of the sliding sleeve is provided with a second recess;

[0013] The slot wall of the first groove is provided with a pair of longitudinal linkage grooves; the shaft of the third motor is arranged in the first groove, and the linkage rods on both sides of the shaft are arranged in the linkage grooves on both sides, and the linkage rods can slide in the linkage grooves along the axial direction of the shaft;

[0014] The slot wall of the second groove is provided with a first tooth part and a second tooth part,

[0015] When the sliding sleeve slides to the first gear position, the first tooth part is in gear connection with the first rotating shaft, and the second tooth part is out of gear connection with the second rotating shaft;

[0016] When the sliding sleeve slides to the second gear position, the second tooth part is in gear connection with the second rotating shaft, and the first tooth part is out of gear connection with the first rotating shaft.

[0017] Further, the second groove is provided with a spring for supporting the second rotating shaft.

[0018] The sliding sleeve is provided with a lifting assembly, which comprises a toothed ring arranged on the sliding sleeve and a toothed column provided with a transverse toothed ring.

[0019] The end of the toothed column is connected with a rotating knob rod and a rotating cap.

[0020] The rotating cap is rotated to rotate the toothed column, and the sliding sleeve connected with the toothed column is lifted or lowered.

[0021] The two wheel discs are clamped on the top surface and the bottom surface of the cam.

[0022] The rotation angle of the wheel disc is ±45°.

[0023] The pen head bending structure comprises a shell; the pen head bending structure is arranged in the shell, and the top and the bottom of the shell are respectively provided with a rod hole for penetrating the pen rod.

[0024] The electric knife pen with a bendable pen head comprises the pen head bending structure.

[0025] The present application has the following advantages:

[0026] The pen head bending structure and the electric knife pen with a bendable pen head of the present application have the following advantages: the shell is arranged at the end of the electric knife pen, the bending device composed of the wheel disc and the cam is arranged in the shell, the pen rod is pushed by the wheel disc to be deviated in the circumferential direction for bending, the pen rod is pushed by the cam to be deviated in the radial direction for bending, and the pen head of the electric knife pen can be bent and deviated within a certain range, which is convenient for the operator to operate, so that the corresponding part can be treated, the treatment efficiency is improved, and the present application has strong practicability and wide applicability. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural view of the wheel disc and the cam.

[0028] Figure 2 Structure diagram of the second rotating shaft.

[0029] Figure 3 Structure diagram of the second rotating shaft and the sliding sleeve.

[0030] Figure 4 Structure diagram of the two wheel discs clamping the cam.

[0031] Figure 5 Structure diagram of the third motor driving the sliding sleeve.

[0032] Figure 6 Structure diagram of the cam pushing the pen barrel to bend.

[0033] Figure 7 Structure diagram of the electric knife pen.

[0034] Figure 8 Structure diagram of the lifting assembly.

[0035] The meanings of the marks in the drawings are as follows: 1, wheel disc, 2, cam, 3, pen barrel, 4, radial groove, 5, first rotating shaft, 6, second rotating shaft, 7, first tooth part, 8, second tooth part, 9, sliding sleeve, 10, first groove, 11, second groove, 12, third motor, 13, linkage rod, 14, shell, 15, rotating cap, 16, first button, 17, second button, 18, tooth column.

[0036] a, radial, 2, circumferential. DETAILED DESCRIPTION

[0037] The application will be specifically introduced below in combination with the drawings and specific embodiments.

[0038] The pen head bending structure is composed of the cam 2, the wheel disc 1, the first rotating shaft 5, the second rotating shaft 6, the third motor 12 and the second rotating shaft 6, and the lifting assembly.

[0039] The first rotating shaft 5 is a hollow shaft and is arranged around the second rotating shaft 6. The wheel disc 1 is arranged on the first rotating shaft 5, and the radial groove 4 along the radial direction is arranged on the wheel disc 1. The cam 2 is arranged on the second rotating shaft 6. Preferably, the wheel disc 1 is two, and the cam 2 is arranged between the two wheel discs 1. That is, the top surface and the bottom surface of the cam 2 are close to the wheel disc 1 respectively, the cam 2 is clamped by the wheel disc 1, and the stability of the rotation of the cam 2 is further ensured.

[0040] The bottom of the first rotating shaft 5 and the bottom of the second rotating shaft 6 are respectively provided with tooth patterns.

[0041] The top of the sliding sleeve 9 is provided with a second groove 11. The shaft bottom of the second rotating shaft 6 is placed in the second groove 11, and the inner wall of the second groove 11 is provided with a first tooth part 7 which is in gear with the first rotating shaft 5 and a second tooth part 8 which is in gear with the second rotating shaft 6. When the sliding sleeve 9 is raised or lowered along the second rotating shaft 6 based on the second groove 11: when the sliding sleeve 9 is slid to the first gear position, the first tooth part 7 is in gear with the first rotating shaft 5, and the second tooth part 8 is out of gear with the second rotating shaft 6; when the sliding sleeve 9 is slid to the second gear position, the second tooth part 8 is in gear with the second rotating shaft 6, and the first tooth part 7 is out of gear with the first rotating shaft 5.

[0042] The liftable sliding sleeve 9 constitutes a gear shifting device of the first rotating shaft 5 and the second rotating shaft 6.

[0043] The bottom of the sliding sleeve 9 is provided with a first groove 10, and the groove wall of the first groove 10 is provided with a pair of axial, i.e. longitudinal, linkage grooves. The shaft end of the machine shaft of the third motor 12 is placed in the first groove 10, and the two sides of the machine shaft are provided with a pair of linkage rods 13 which are respectively placed in the two linkage grooves. When the machine shaft of the third motor 12 rotates, the sliding sleeve 9 is rotated through the linkage of the linkage rods 13. When the sliding sleeve 9 is raised or lowered, the linkage rods 13 can be raised or lowered in the linkage grooves.

[0044] Preferably, a spring which supports the second rotating shaft 6 is arranged in the second groove 11.

[0045] The outer wall of the sliding sleeve 9 is provided with an annular tooth pattern, and a tooth column 18 provided with a transverse tooth pattern is in gear with the outer wall of the sliding sleeve 9. The tooth column 18 is rotated by the knob lever, constituting a raising and lowering assembly of the sliding sleeve 9.

[0046] The above-mentioned pen head bending structure is arranged in the shell 14, the knob lever penetrates the shell wall, and the knob 15 is placed outside the shell 14. The top surface and the bottom surface of the shell 14 are respectively provided with a rod hole, and the pen rod 3 of the electrotome pen penetrates the rod hole and is placed in the radial groove 4.

[0047] The material of the pen rod 3 is preferably a material which has certain toughness and can be bent, such as aluminum alloy, glass fiber, etc.

[0048] In use,

[0049] Method one: adjust the gear position of the sliding sleeve 9, so that the third motor 12 rotates the second rotating shaft 6, the linkage cam 2 rotates, and the rim of the cam 2 supports the pen rod 3 along the radial groove 4, so that the two ends of the pen rod 3 are limited in the rod hole, the rod body is bent, the middle bent rod body makes the top of the rod body and the pen head deviate, and the bending effect is formed. That is, relative to the wheel disc 1, the middle part of the rod body is bent in the radial direction.

[0050] Method two: adjust the gear position of the sliding sleeve 9, so that the third motor 12 rotates the first rotating shaft 5, the linkage wheel disc 1 rotates, i.e. the radial groove 4 rotates. The rotating radial groove 4 pushes the pen rod 3 to bend in the circumferential direction.

[0051] Adjustment mode two and adjustment mode one can be used in combination to expand the angle that can be adjusted.

[0052] Preferably, in the basic state of the pen barrel 3 being kept in the longitudinal direction, the adjustment range of mode two, i.e. the rotatable angle of the wheel disc 1, is ±45°. Avoiding too large amplitude, irreversible damage to the pen barrel 3 and the internal circuit thereof is caused.

[0053] As Figure 7 shown in the structural schematic diagram of the electric knife pen.

[0054] The electric knife pen is provided with a first button 16 and a second button 17, the first button 16 is used for controlling the third motor 12, and the second button 17 is used for controlling the pen head (electric knife head).

[0055] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the above-mentioned embodiments do not limit the present application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A pen point bending structure, characterized by, The cam and the wheel disc are coaxial; the wheel disc is provided with radial slots in the radial direction; the pen barrel of the electrotome is arranged in the radial slots in the axial direction; The cam is linked by the first motor through the first rotating shaft, and the pen barrel is pushed to bend in the radial direction by the rim of the cam; The wheel disc is linked by the second motor through the second rotating shaft, and the pen barrel is pushed to bend in the circumferential direction by the slot wall of the radial slot.

2. The tip bending structure of claim 1, wherein The second rotating shaft is sleeved outside the first rotating shaft, and is linked by the third motor through the gear shifting device; The gear shifting device comprises a sliding sleeve, the bottom of the sliding sleeve is provided with a first recess, and the top of the sliding sleeve is provided with a second recess; The slot wall of the first recess is provided with a pair of longitudinal linkage slots; the shaft of the third motor is arranged in the first recess, the linkage rods on both sides of the shaft are arranged in the linkage slots on both sides, and the linkage rods can slide in the linkage slots in the axial direction of the shaft; The slot wall of the second recess is provided with a first tooth part and a second tooth part, When the sliding sleeve slides to the first gear position, the first tooth part is in gear connection with the first rotating shaft, and the second tooth part is out of gear connection with the second rotating shaft; When the sliding sleeve slides to the second gear position, the second tooth part is in gear connection with the second rotating shaft, and the first tooth part is out of gear connection with the first rotating shaft.

3. The tip bend structure of claim 2, wherein A spring is arranged in the second recess to support the second rotating shaft.

4. The tip bending structure of claim 2, wherein The sliding sleeve is provided with a lifting assembly, the lifting assembly comprises a toothed ring arranged around the sliding sleeve, and a toothed column provided with transverse toothed patterns; The end of the toothed column is connected with a rotating knob through a rotating rod; Rotating the rotating knob rotates the toothed column, and the sliding sleeve linked with the toothed column is lifted or lowered.

5. The tip bend structure of claim 1, wherein The wheel disc is provided with two wheel discs arranged on the top surface and the bottom surface of the cam.

6. The tip bend structure of claim 1, wherein The rotation angle of the wheel disc is ±45°.

7. The tip bend structure of claim 1, wherein The pen head bending structure is arranged in the shell, and the top and the bottom of the shell are respectively provided with rod holes for penetrating the pen barrel.

8. An electrosurgical pencil with a bendable tip, characterized in that The pen head end of the electrotome is provided with the pen head bending structure according to any one of claims 1-7.

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