CN211094401U - Constant-torque pressure sensing module - Google Patents
Constant-torque pressure sensing module Download PDFInfo
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- CN211094401U CN211094401U CN201921679964.8U CN201921679964U CN211094401U CN 211094401 U CN211094401 U CN 211094401U CN 201921679964 U CN201921679964 U CN 201921679964U CN 211094401 U CN211094401 U CN 211094401U
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Abstract
The utility model relates to a constant torque pressure sensing module, which comprises a driving shell, a driven inner cylinder and a constant force torsion spring; the driven inner cylinder is arranged in the driving shell and can rotate around the axial lead of the driving shell; the constant force torsion spring is positioned between the driving shell and the driven inner cylinder; the constant force torsion spring is hooped on the outer circular surface of the driven inner cylinder, and two ends of the constant force torsion spring are fixed on the driving shell. The constant-torque pressure sensing module simultaneously fixes two ends of a constant-force torsion spring on the driving shell by utilizing the mechanical characteristics of the constant-force torsion spring, and the constant-force torsion spring is hooped on the outer circular surface of the driven inner cylinder; when the driving shell rotates, the constant force torsion spring is driven to rotate, and the constant force torsion spring drives the driven inner cylinder to rotate through the tightening force; when the rotation resistance exceeds the tightening force of the constant force torsion spring, the inner diameter of the constant force torsion spring is enlarged so as to be separated from the driven inner cylinder, so that the anastomosis force can not be increased any more, and the purpose of controlling the anastomosis force is achieved.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically a decide moment of torsion forced induction module for anastomat.
Background
The suturing device for anastomosing various cavities of human body is called as a tubular anastomat, which can pass in and out on human body tissues to form a plurality of rows of crisscross suturing nails arranged in the same direction, and simultaneously, the inner tissues are cut off by a ring-shaped knife, so that the cavity organs can be quickly and simply sutured.
In the operation process of using the traditional tubular anastomat, whether tissues are fully extruded or are correctly anastomosed is judged according to the distance between the nail abutting seat and the nail bin, so that the distance between the nail abutting seat and the nail bin needs to be indicated so as to be convenient for a doctor to judge. However, since the pointer to be observed by the doctor is located in the transparent pointer window on the opposite side of the firing handle, the pointer window does not face the doctor's sight line side when the doctor operates the instrument due to the manipulation or operation request; in order to observe whether the body of the instrument rotates to the cocked area (green area) or not and adjust to the cocked area, when the position of the indicating needle is finely adjusted in the green area according to the tissue thickness, the coordination (eyes, hands, instruments and tissues) of the doctor on the operation of the instruments is influenced.
However, the tube-type anastomat sold in the market at present does not have the function of pre-pressure locking, and for example, a bent tube-type digestive tract neck anastomat disclosed in Chinese patent number 201220052990.X, a round tube-type anastomat provided with a pointer piece and a round tube-type anastomat disclosed in Chinese patent number 201220732744.9, a round tube-type anastomat disclosed in Chinese patent number 201220732605.6, a round tube-type anastomat disclosed in Chinese patent number 201210582068.6, a multi-indication window tube-type anastomat disclosed in Chinese patent number 201820041248.6 and the like do not relate to a scheme for determining the pre-anastomosis pressure. The chinese patent No. 201820041248.6 "a multi-indication window tube type anastomat" mentioned an indication mechanism, which can rotate around the anastomat body, but has a complex structure, and cannot realize accurate judgment of pre-anastomosis pressure, and still needs a doctor to have a high skill and experience to judge whether the tissue has been fully extruded or correctly anastomosed by the distance between the nail supporting seat and the nail bin. Because, the simple distance judgment of the difference (especially the thickness difference) of the tissues of the intestinal wall or the stomach wall of the human body cannot reflect the attaching state between the two tissues. The circular tube type stapler disclosed in chinese patent No. 201220732605.6 describes the firing operation of the stapler in great detail.
The tubular anastomat has many advantages, such as no tension of an anastomosis, good blood supply of an anastomosis part, no inflammation, injury, edema or cancer tissue residue of an anastomosis tissue and the like. However, in the using process, due to the difference of human body constitutions, particularly the difference of tissue thicknesses of the intestinal wall and the stomach wall of a human body, the pre-anastomosis pressure (the tissue walls to be anastomosed need to be tightly attached together and the precise anastomosis can be realized by keeping a certain pressure) needs to be determined completely depending on the experience of a doctor, sometimes the relative position of the nail abutting seat assembly needs to be repeatedly adjusted to determine the proper pre-anastomosis pressure so as to carry out anastomosis firing operation, the efficiency is low, the operation difficulty is high, and the problems of anastomosis port back arrangement, anastomosis port bleeding and the like are easily caused; meanwhile, the working intensity of doctors is high, and the psychological pressure is high.
Aiming at the problems, the constant-torque pressure sensing module arranged at the pushing handle of the anastomat is designed, so that the anastomosis force is controlled within a certain range, and the method is one of means for effectively reducing the operation difficulty of a doctor.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to overcome the defects of the prior art, and the constant torque pressure sensing module provided by the utility model utilizes the mechanical characteristics of the constant force torsion spring to simultaneously fix the two ends of the constant force torsion spring on the driving shell, and the constant force torsion spring is hooped on the outer circular surface of the driven inner cylinder; when the driving shell rotates, the constant force torsion spring is driven to rotate, and the constant force torsion spring drives the driven inner cylinder to rotate through the tightening force; when the rotation resistance exceeds the tightening force of the constant force torsion spring, the inner diameter of the constant force torsion spring is enlarged so as to be separated from the driven inner cylinder, so that the anastomosis force can not be increased any more, and the purpose of controlling the anastomosis force is achieved.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a constant-torque pressure sensing module comprises a driving shell, a driven inner cylinder and a constant-force torsion spring; the driven inner cylinder is arranged in the driving shell and can rotate around the axial lead of the driving shell; the constant force torsion spring is positioned between the driving shell and the driven inner cylinder; the constant force torsion spring is hooped on the outer circular surface of the driven inner cylinder, and two ends of the constant force torsion spring are fixed on the driving shell.
The inner wall of the driving shell is provided with a constant force torsion spring fixing groove, a front positioning step and a rear positioning step, the front positioning step and the rear positioning step are respectively located at two ends of the driving shell, and the fixing grooves are respectively arranged between the front positioning step and the rear positioning step.
The driven inner cylinder comprises a cylinder body and a positioning fin positioned at the front end of the cylinder body.
The constant force torsion spring is a cylindrical spring, two ends of the cylindrical spring are provided with fixing support legs, and the fixing support legs are perpendicular to the axial lead of the cylindrical spring.
The fixed slot is an inverted cone-shaped slot.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
the two ends of the constant force torsion spring are simultaneously fixed on the driving shell by utilizing the mechanical characteristics of the constant force torsion spring, and the constant force torsion spring is hooped on the outer circular surface of the driven inner cylinder; when the driving shell rotates, the constant force torsion spring is driven to rotate, and the constant force torsion spring drives the driven inner cylinder to rotate through the tightening force; when the rotation resistance exceeds the tightening force of the constant force torsion spring, the inner diameter of the constant force torsion spring is enlarged so as to be separated from the driven inner cylinder, so that the anastomosis force can not be increased any more, and the purpose of controlling the anastomosis force is achieved.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
FIG. 1 is a schematic view of the usage state of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
fig. 3 is a schematic view of a part of the structure of the constant force torsion spring of the present invention.
In the figure: 1. a nail abutting seat; 2. a sewing and cutting mechanism; 3. a tube bending assembly; 4. a housing; 5. adjusting a rod; 6. a firing handle assembly; 7. a handle is rotated; 8. a constant torque pressure sensing module; 9. a drive housing; 9-1, rear positioning steps; 9-2, a front positioning step; 9-3, fixing grooves; 10. a constant force torsion spring; 11. a driven inner cylinder; 11-1, positioning fins; 12. and fixing the support legs.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, a constant torque pressure sensing module simplifies the tightening process of the conventional manually controlled stapler to be controlled by a specific torque force, which is obtained by calculation and experiment, and is generally set to be 15N-25N corresponding to a specific length and diameter of a constant force torsion spring 10. During the use, tighten up the anastomat and only need rotate the turning handle 7 according to the required direction, turning handle 7 drives the rotation of drive shell 9, when the anastomat tightens up to a certain degree, the human body is taken the tissue of coincide and is in hugging closely the state, is the pressure peak value of agreeing in advance this moment, and the moment of torsion power that the constant force torsional spring 10 produced is not enough to overcome above-mentioned pressure peak value, when rotating turning handle 7 again, produces idle running phenomenon between turning handle 7 (with the linkage of drive shell 9) and the constant force torsional spring 10, promptly: the rotating handle 7 (linked with the driving shell 9) rotates around the center thereof independently, the driven inner cylinder 11 is static, the rotating shaft of the anastomat is in a static state, and the pushing rod of the anastomat is also in a static state.
A constant torque pressure sensing module 8 is mounted within the stem 7 and drives the housing 9 to rotate with the stem 7.
To achieve the above objects, the above-mentioned pre-anastomotic pressure magnetic induction type tube stapler includes a staple abutting seat assembly and a stapler body, and the staple abutting seat assembly is installed at a front end of the stapler body, which is the same as the conventional stapler. The nail seat component and the anastomat body both adopt structures similar to those of a traditional anastomat.
The nail abutting seat assembly comprises a nail abutting seat 1, a sewing and cutting mechanism 2 and an adjusting rod 5 for driving the nail abutting seat 1 and the sewing and cutting mechanism 2 to be close to or far away from each other, and the adjusting rod 5 can be movably arranged in the shell 4 along the front-back direction. The adjusting rod 5 is connected with a driven inner cylinder 11 of the constant torque pressure sensing module 8.
For the triggering operation of the stapler and the structure of the triggering device, see the circular tube type stapler disclosed in Chinese patent No. 201220732605.6.
By utilizing the mechanical characteristics of the constant force torsion spring, two ends of the constant force torsion spring 10 are simultaneously fixed on the driving shell 9, and the constant force torsion spring 10 is hooped on the outer circular surface of the driven inner cylinder 11; when the driving shell 9 rotates, the constant force torsion spring 10 is driven to rotate, and the constant force torsion spring 10 drives the driven inner cylinder 11 to rotate through the tightening force; when the rotational resistance exceeds the tightening force of the constant force torsion spring 10, the inner diameter of the constant force torsion spring 10 is increased to be separated from the driven inner cylinder 11, so that the anastomosis force can not be increased any more, and the purpose of controlling the anastomosis force is achieved.
The constant torque pressure sensing module comprises a driving shell 9, a driven inner cylinder 11 and a constant force torsion spring 10; the driven inner cylinder 11 is arranged in the driving shell 9 and can rotate around the axial lead of the driving shell 9; the constant force torsion spring 10 is positioned between the driving shell 9 and the driven inner barrel 11; the constant force torsion spring 10 is hooped on the outer circular surface of the driven inner cylinder 11, and two ends of the constant force torsion spring 10 are fixed on the driving shell 9.
The inner wall of the driving shell 9 is provided with a constant force torsion spring fixing groove 9-3, a front positioning step 9-2 and a rear positioning step 9-1, the front positioning step 9-2 and the rear positioning step 9-1 are respectively arranged at two ends of the driving shell 9, and the fixing groove 9-3 is respectively arranged between the front positioning step 9-2 and the rear positioning step 9-1.
The driven inner barrel 11 comprises a barrel body and a positioning fin 11-1 positioned at the front end of the barrel body.
The constant force torsion spring 10 is a cylindrical spring, two ends of the cylindrical spring are provided with fixing support legs 12, and the fixing support legs 12 are perpendicular to the axial lead of the cylindrical spring. The fixing legs 12 are installed in the fixing grooves 9-3.
The fixing groove 9-3 is an inverted cone-shaped groove, and the fixing support leg 12 is not easy to be separated.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (5)
1. A constant torque pressure sensing module, comprising: comprises a driving shell, a driven inner cylinder and a constant force torsion spring; the driven inner cylinder is arranged in the driving shell and can rotate around the axial lead of the driving shell; the constant force torsion spring is positioned between the driving shell and the driven inner cylinder; the constant force torsion spring is hooped on the outer circular surface of the driven inner cylinder, and two ends of the constant force torsion spring are fixed on the driving shell.
2. The constant torque pressure sensing module of claim 1, wherein: the inner wall of the driving shell is provided with a constant force torsion spring fixing groove, a front positioning step and a rear positioning step, the front positioning step and the rear positioning step are respectively located at two ends of the driving shell, and the fixing grooves are respectively arranged between the front positioning step and the rear positioning step.
3. The constant torque pressure sensing module of claim 1, wherein: the driven inner cylinder comprises a cylinder body and a positioning fin positioned at the front end of the cylinder body.
4. The constant torque pressure sensing module of claim 1, wherein: the constant force torsion spring is a cylindrical spring, two ends of the cylindrical spring are provided with fixing support legs, and the fixing support legs are perpendicular to the axial lead of the cylindrical spring.
5. The constant torque pressure sensing module of claim 2, wherein: the fixed slot is an inverted cone-shaped slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679964.8U CN211094401U (en) | 2019-10-09 | 2019-10-09 | Constant-torque pressure sensing module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679964.8U CN211094401U (en) | 2019-10-09 | 2019-10-09 | Constant-torque pressure sensing module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211094401U true CN211094401U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921679964.8U Active CN211094401U (en) | 2019-10-09 | 2019-10-09 | Constant-torque pressure sensing module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211094401U (en) |
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2019
- 2019-10-09 CN CN201921679964.8U patent/CN211094401U/en active Active
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