Surgical distance measuring device

Abstract

The utility model discloses an operation distance measuring device, and relates to the field of medical instruments, a first shell, an outer protective tube and a second shell are connected in sequence, a transmission mechanism is installed in the first shell, a roller is located outside the first shell and is connected with the transmission mechanism, and a strip-shaped guide hole is formed in one side, close to the outer protective tube, of the second shell; a control display mechanism is installed on the side, away from the outer protective pipe, of the second shell, the connecting block is slidably installed in the strip-shaped guide hole, the displacement sensing component is installed in the second shell, the end, away from the outer protective pipe, of the connecting block is connected with the displacement sensing component, and the displacement sensing component is electrically connected with the control display mechanism. A threaded hole is formed in the end, close to the outer protective pipe, of the connecting block, one end of the transmission screw is installed in the threaded hole, and the other end of the transmission screw penetrates through the outer protective pipe, extends into the first shell and is connected with the transmission mechanism. The operation distance measuring device is easy and convenient to operate, the operation tends to be precise, and therefore the operation quality and the satisfaction degree of a patient are improved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a surgical distance measuring device. Background Art

[0002] With the progress of technology and the continuous development of medicine, minimally invasive surgery has become increasingly popular in clinical practice. Minimally invasive surgery is performed through the smallest possible incisions within a certain tissue cavity, with the aid of modern visual devices (such as endoscopes and microscopes) or direct vision. The rise of minimally invasive surgery has brought many benefits to patients. Since the surgical trauma is small, patients recover quickly after surgery, have less pain, and can return to normal life earlier. However, the small incisions also pose higher requirements for surgical operations and make it difficult to accurately excise tissues and lesions. Currently, there is no suitable intelligent instrument for measuring the distance of human tissues within the cavity to guide the excision of human tissues and lesions during surgery. Due to the small surgical incision and limited surgical field of view, it is inconvenient to directly place existing measuring tools such as rulers into the body cavity for distance measurement. Clinically, doctors usually cut a certain length of silk thread or Kirschner wire outside the body in advance and place it into the body for length measurement. However, the operation is very inconvenient and consumes a lot of precious surgical time. In addition, due to operation errors, the measurement is often inaccurate, resulting in inaccurate surgery and affecting the surgical effect. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a surgical distance measuring device, which is simple and easy to operate during operation, makes the surgery more precise, and thus improves the surgical quality and patient satisfaction.

[0004] To achieve the above object, the utility model provides the following solutions:

[0005] The present utility model provides a surgical distance measuring device, which is characterized by comprising a first housing, an outer protection tube, a second housing, a roller, a transmission mechanism, a transmission screw rod, a connection block, a displacement sensing component and a control and display mechanism. The first housing, the outer protection tube and the second housing are sequentially connected. The transmission mechanism is installed in the first housing. The roller is located outside the first housing and is connected to the transmission mechanism. A strip-shaped guiding hole is provided on one side of the second housing close to the outer protection tube, and the length direction of the strip-shaped guiding hole is consistent with the axial direction of the outer protection tube. The control and display mechanism is installed on one side of the second housing far from the outer protection tube. The connection block is slidably installed in the strip-shaped guiding hole. The displacement sensing component is installed in the second housing. One end of the connection block far from the outer protection tube is connected to the displacement sensing component. The displacement sensing component is electrically connected to the control and display mechanism. A threaded hole is provided at one end of the connection block close to the outer protection tube. One end of the transmission screw rod is installed in the threaded hole, and the other end of the transmission screw rod passes through the outer protection tube and extends into the first housing and is connected to the transmission mechanism.

[0006] Preferably, a first chamber and a second chamber are sequentially arranged in the first housing. The cross-section of the first chamber is smaller than that of the second chamber. One end of the outer protection tube far from the second housing is clamped in the first chamber, and the transmission mechanism is installed in the second chamber.

[0007] Preferably, the transmission mechanism comprises a connecting cylinder, a circular plate, a spur gear, a baffle and a horizontal gear. The baffle is arranged in the second chamber and divides the second chamber into a first installation chamber and a second installation chamber. The first installation chamber is communicated with the first chamber. The connecting cylinder is arranged in the first installation chamber. One end of the transmission screw rod can be clamped to one end of the connecting cylinder. A clamping post is arranged at the other end of the connecting cylinder, and the clamping post can be clamped on the circular plate. The spur gear is fixed on one side of the circular plate far from the connecting cylinder. The outer diameter of the circular plate is larger than that of the spur gear. A stepped hole matching the structures of the spur gear and the circular plate is provided on the baffle. An installation shaft is arranged in the second installation chamber. The axial direction of the installation shaft is perpendicular to the axial direction of the transmission screw rod. The horizontal gear is rotatably installed on the installation shaft and meshes with the spur gear. The roller is connected to the horizontal gear, and the axial direction of the roller is consistent with the axial direction of the horizontal gear.

[0008] Preferably, a roller shaft is arranged on one side of the roller. The roller shaft passes through the first housing and the installation shaft and is connected to the horizontal gear.

[0009] Preferably, the first housing includes a first half housing and a second half housing which are symmetrically arranged. A plurality of card slots are provided on one side of the first half housing close to the second half housing, and a plurality of blocks which are matched with the card slots in structure and corresponding in position are provided on one side of the second half housing close to the first half housing.

[0010] Preferably, a locking bolt is further included. The locking bolt is arranged on one side of the connecting block and can abut against the transmission screw rod.

[0011] Preferably, the displacement sensing component is a pull rod type displacement sensor. One end of the pull rod of the pull rod type displacement sensor is connected to the connecting block, the other end of the pull rod of the pull rod type displacement sensor is connected to the electronic induction block of the pull rod type displacement sensor, and the electronic induction block of the pull rod type displacement sensor is electrically connected to the control display mechanism.

[0012] Preferably, the control display mechanism includes a PCB board, a display screen, a digital display switch, a unit conversion button and a zeroing button. The PCB board is arranged inside the second housing, and the display screen, the digital display switch, the unit conversion button and the zeroing button are all arranged on the surface of the second housing on the side away from the outer protection tube. The displacement sensing component, the display screen, the digital display switch, the unit conversion button and the zeroing button are all electrically connected to the PCB board.

[0013] The utility model has achieved the following technical effects compared with the prior art:

[0014] When the surgical distance measuring device of the utility model works, the roller rolls along the human tissue in the cavity, and then drives the transmission screw rod to rotate in place through the transmission mechanism, so that the connecting block moves in the strip-shaped guide hole. The moving distance of the connecting block is transmitted to the control display mechanism through the displacement sensing component, and the distance of the roller rolling is obtained through the conversion of the control display mechanism for display, thereby realizing the accurate measurement of the length of the human tissue. The surgical distance measuring device is simple and easy to operate during operation, makes the operation more accurate, thereby improving the surgical quality and patient satisfaction, and solves the problems that it is difficult to measure the tissue in the cavity during small incision surgery and the surgical resection is inaccurate. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1The first three-dimensional structure diagram of the surgical distance measuring device provided by the present utility model;

[0017] Figure 2 The second three-dimensional structure diagram of the surgical distance measuring device provided by the present utility model;

[0018] Figure 3 The exploded view of the surgical distance measuring device provided by the present utility model;

[0019] Figure 4 is Figure 3 The partial enlarged view at position A in

[0020] Figure 5 is Figure 3 The partial enlarged view at position B in

[0021] Explanation of reference numerals: 100, surgical distance measuring device; 1, first housing; 101, first half housing; 102, card slot; 103, second half housing; 2, outer protection tube; 3, second housing; 4, strip-shaped guide hole; 5, connecting block; 6, transmission screw; 7, locking bolt; 8, pull rod; 9, display screen; 10, digital display switch; 11, unit conversion button; 12, zeroing button; 13, baffle; 14, second installation cavity; 15, connecting cylinder; 16, round plate; 17, spur gear; 18, stepped hole; 19, mounting shaft; 20, horizontal gear; 21, roller. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] The purpose of the present utility model is to provide a surgical distance measuring device, which is simple and easy to operate during operation, making the operation more accurate, thereby improving the operation quality and patient satisfaction.

[0024] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0025] As Figures 1 - 5As shown in the figure, this embodiment provides a surgical ranging device 100, which includes a first housing 1, an outer protection tube 2, a second housing 3, a roller 21, a transmission mechanism, a transmission screw 6, a connecting block 5, a displacement sensing component, and a control and display mechanism. The first housing 1, the outer protection tube 2, and the second housing 3 are connected in sequence. The transmission mechanism is installed in the first housing 1. The roller 21 is located outside the first housing 1 and is connected to the transmission mechanism. A strip-shaped guide hole 4 is provided on one side of the second housing 3 close to the outer protection tube 2. The length direction of the strip-shaped guide hole 4 is consistent with the axial direction of the outer protection tube 2. A control and display mechanism is installed on the side of the second housing 3 away from the outer protection tube 2. The connecting block 5 is slidably installed in the strip-shaped guide hole 4. The displacement sensing component is installed in the second housing 3. One end of the connecting block 5 away from the outer protection tube 2 is connected to the displacement sensing component. The displacement sensing component is electrically connected to the control and display mechanism. A threaded hole is provided at one end of the connecting block 5 close to the outer protection tube 2. One end of the transmission screw 6 is installed in the threaded hole. The other end of the transmission screw 6 passes through the outer protection tube 2 and extends into the first housing 1 and is connected to the transmission mechanism. When the roller 21 rolls, it can drive the transmission screw 6 to rotate in place through the transmission mechanism. Under the rotation of the transmission screw 6 and the guiding action of the strip-shaped guide hole 4, the connecting block 5 can move along the strip-shaped guide hole 4.

[0026] During operation, the roller 21 rolls along the human tissue in the cavity, and then drives the transmission screw 6 to rotate in place through the transmission mechanism, so that the connecting block 5 moves in the strip-shaped guide hole 4. The moving distance of the connecting block 5 is transmitted to the control and display mechanism through the displacement sensing component. After conversion by the control and display mechanism, the rolling distance of the roller 21 is obtained and displayed, thereby realizing the accurate measurement of the length of human tissue. This surgical ranging device 100 is simple and easy to operate during operation, making the operation more accurate, thus improving the surgical quality and patient satisfaction, and solving the problems of difficult measurement of tissue in the cavity and inaccurate surgical excision in small incision surgeries.

[0027] A first chamber and a second chamber are sequentially arranged in the first housing 1. The cross-section of the first chamber is smaller than that of the second chamber. One end of the outer protection tube 2 away from the second housing 3 is clamped in the first chamber, that is, the outer protection tube 2 and the first housing 1 can be disassembled and connected. The transmission mechanism is installed in the second chamber.

[0028] As Figure 4As shown in the figure, the transmission mechanism includes a connecting cylinder 15, a circular plate 16, a spur gear 17, a baffle 13 and a horizontal gear 20. The baffle 13 is arranged in the second chamber and divides the second chamber into a first installation chamber and a second installation chamber 14. The first installation chamber is connected to the first chamber, and the cross-section of the first chamber is smaller than that of the first installation chamber. The connecting cylinder 15 is arranged in the first installation chamber. The first installation chamber is a cylindrical cavity and is structurally matched with the connecting cylinder 15. After the connecting cylinder 15 is installed in the first installation chamber, it no longer moves axially and can only rotate relative to the first installation chamber. The transmission screw 6 can be clamped at one end of the connecting cylinder 15. A clamping post is arranged at the other end of the connecting cylinder 15, and the clamping post can be clamped on the circular plate 16. A spur gear 17 is fixed on the side of the circular plate 16 away from the connecting cylinder 15. The outer diameter of the circular plate 16 is larger than the outer diameter of the spur gear 17. A stepped hole 18 structurally matched with the spur gear 17 and the circular plate 16 is arranged on the baffle 13. An installation shaft 19 is arranged in the second installation chamber 14. The axis direction of the installation shaft 19 is perpendicular to the axis direction of the transmission screw 6. The horizontal gear 20 is rotatably installed on the installation shaft 19 and meshes with the spur gear 17. The roller 21 is connected to the horizontal gear 20, and the axis direction of the roller 21 is consistent with the axis direction of the horizontal gear 20.

[0029] Specifically, the stepped hole 18 includes a connected first round hole and a second round hole. The inner diameter of the first round hole is smaller than that of the second round hole. The first round hole is structurally matched with the spur gear 17, and the second round hole is structurally matched with the circular plate 16. The spur gear 17 and the circular plate 16 can rotate in the stepped hole 18. By setting the stepped hole 18, the axial movement of the spur gear 17 toward the side close to the horizontal gear 20 is restricted. By setting the connecting cylinder 15 and the first installation chamber with a structurally matched structure, the axial movement of the spur gear 17 toward the side away from the horizontal gear 20 is restricted. Thus, the axial movement of the spur gear 17 is restricted, and it can only perform circumferential movement. In this embodiment, the circular plate 16 at one end of the spur gear 17 is clamped with the clamping post on the connecting cylinder 15. After the transmission screw 6 is clamped with the connecting cylinder 15, the spur gear 17, the circular plate 16, the connecting cylinder 15 and the transmission screw 6 form an integral structure. This integral structure cannot move axially and can only perform circumferential movement. Thus, the in-situ rotation of the transmission screw 6 during work is realized.

[0030] A roller shaft is arranged on one side of the roller 21. The roller shaft is fixed at the center of the roller 21. The roller shaft passes through the first housing 1 and the installation shaft 19 and is connected to the horizontal gear 20, so that the roller 21 can drive the horizontal gear 20 to rotate when the roller 21 rotates. Specifically, the roller shaft can be clamped on the horizontal gear 20.

[0031] The first housing 1 in this embodiment adopts a detachable structure. Specifically, the first housing 1 includes a symmetrically arranged first half housing 101 and a second half housing 103. On one side of the first half housing 101 close to the second half housing 103, there are a plurality of card slots 102. On one side of the second half housing 103 close to the first half housing 101, there are a plurality of blocks that match the structure of the card slots 102 and are correspondingly positioned. After the blocks are snapped into the card slots 102, the first half housing 101 and the second half housing 103 are fixedly connected to form the first housing 1.

[0032] When cleaning and disinfection are required, first remove the roller shaft from the horizontal gear 20, and then remove the roller 21. After that, disassemble the first half housing 101 and the second half housing 103. At this time, the transmission mechanism, the first half housing 101, the second half housing 103, and the roller 21 can be sterilized.

[0033] This embodiment also includes a locking bolt 7. The locking bolt 7 is arranged on one side of the connecting block 5 and can abut against the transmission screw 6. When in the measurement working state, the locking bolt 7 does not lock the transmission screw 6, so that when the transmission screw 6 rotates, the connecting block 5 can move along the strip-shaped guide hole 4. When it is necessary to stop the measurement work, the locking bolt 7 can be screwed inward to abut against the transmission screw 6, that is, to lock the transmission screw 6 so that it no longer rotates.

[0034] The displacement sensing component is a pull-rod type displacement sensor. The housing of the pull-rod type displacement sensor is installed in the second housing 3. One end of the pull rod 8 of the pull-rod type displacement sensor is connected to the connecting block 5, and the other end of the pull rod 8 of the pull-rod type displacement sensor is connected to the electronic induction block of the pull-rod type displacement sensor. The electronic induction block of the pull-rod type displacement sensor is electrically connected to the control and display mechanism.

[0035] The control and display mechanism includes a PCB board, a display screen 9, a digital display switch 10, a unit conversion button 11, and a zeroing button 12. The PCB board is arranged inside the second housing 3. The display screen 9, the digital display switch 10, the unit conversion button 11, and the zeroing button 12 are all arranged on the surface of the second housing 3 on the side away from the outer protection tube 2. The displacement sensing component, the display screen 9, the digital display switch 10, the unit conversion button 11, and the zeroing button 12 are all electrically connected to the PCB board. Specifically, the electronic induction block of the pull-rod type displacement sensor is electrically connected to the PCB board.

[0036] By pressing the digital display switch 10, the opening and closing of the display screen 9 can be realized. By pressing the unit conversion button 11, the switching of the measurement unit can be realized. When the display screen 9 displays the length value of a section of human tissue just measured and it is necessary to measure the length of the next section of human tissue, the zeroing button 12 can be pressed to make the display value on the display screen 9 zero, and then the measurement of the length of the next section of human tissue can be carried out.

[0037] In this specific embodiment, the roller 21 is manufactured by combining flexible high-temperature-resistant medical environmental protection silicone with high-temperature-resistant medical environmental protection PPS plastic steel. The outer protection tube 2 is made of medical 316 stainless steel pipe. The transmission screw 6 is a medical 316 stainless steel screw with a diameter of 3 mm. The connecting block 5 is made of medical 316 stainless steel block. The horizontal gear 20 and the spur gear 17 are precisely processed and cast from high-temperature-resistant medical 316 stainless steel. The PCB board is made of a medical material PC bottom case and a medical material PC top case and is installed according to the IP65 waterproof rating.

[0038] In this embodiment, a precision transmission screw is adopted, and the product precision can reach 0.5 mm. The rolling of the roller 21 realizes a precision of 0.02 mm in digital display, with a tolerance of plus or minus 0.01 mm.

[0039] The specific usage process is as follows: The roller 21 rolls along the human tissue in the cavity, then drives the horizontal gear 20 to rotate, and further drives the spur gear 17 meshing with the horizontal gear 20 to rotate. The spur gear 17 drives the transmission screw 6 to rotate in place through the circular plate 16 and the connecting cylinder 15, so that the connecting block 5 moves in the strip-shaped guide hole 4. The movement of the connecting block 5 acts on the pull rod 8 of the pull rod type displacement sensor. Then, the movement distance of the connecting block 5 is transmitted to the PCB board through the electronic induction block of the pull rod type displacement sensor. After conversion by the PCB board, the rolling distance of the roller 21 is obtained and displayed on the display screen 9, and thus the length value of this section of human tissue can be read.

[0040] In this specification, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A surgical distance measuring device, characterized in that: The invention comprises a first shell, an outer protective tube, a second shell, a roller, a transmission mechanism, a transmission screw, a connecting block, a displacement sensing component and a control and display mechanism. The first shell, the outer protective tube and the second shell are connected in sequence. The transmission mechanism is installed in the first shell. The roller is located outside the first shell and is connected to the transmission mechanism. A strip guide hole is provided on the side of the second shell close to the outer protective tube. The length direction of the strip guide hole is consistent with the axial direction of the outer protective tube. The control and display mechanism is installed on the side of the second shell away from the outer protective tube. The connecting block is slidably installed in the strip guide hole. The displacement sensing component is installed in the second shell. One end of the connecting block away from the outer protective tube is connected to the displacement sensing component. The displacement sensing component is electrically connected to the control and display mechanism. A threaded hole is provided on one end of the connecting block close to the outer protective tube. One end of the transmission screw is installed in the threaded hole. The other end of the transmission screw passes through the outer protective tube and extends into the first shell and is connected to the transmission mechanism.

2. The surgical distance measuring device according to claim 1, characterized in that: The first shell has a first chamber and a second chamber arranged in sequence. The cross section of the first chamber is smaller than that of the second chamber. One end of the outer protective tube away from the second shell is clamped in the first chamber. The transmission mechanism is installed in the second chamber.

3. The surgical distance measuring device according to claim 2, characterized in that: The transmission mechanism includes a connecting cylinder, a circular plate, a spur gear, a baffle and a horizontal gear, the baffle being arranged in the second chamber and dividing the second chamber into a first mounting chamber and a second mounting chamber, the first mounting chamber being communicated with the first chamber, the connecting cylinder being arranged in the first mounting chamber, the transmission screw being capable of being clamped on one end of the connecting cylinder, the other end of the connecting cylinder being provided with a clamping column, the clamping column being capable of being clamped on the circular plate, the spur gear being fixed on a side of the circular plate away from the connecting cylinder, the outer diameter of the circular plate being larger than the outer diameter of the spur gear, the baffle being provided with a stepped hole matching the spur gear and the circular plate structure, the second mounting chamber being provided with a mounting shaft, the axial direction of the mounting shaft being perpendicular to the axial direction of the transmission screw, the horizontal gear being rotatably mounted on the mounting shaft and meshing with the spur gear, the roller being connected to the horizontal gear, and the axial direction of the roller being consistent with the axial direction of the horizontal gear.

4. The surgical distance measuring device according to claim 3, characterized in that: A roller shaft is arranged on one side of the roller, and the roller shaft passes through the first shell and the mounting shaft and is connected with the horizontal gear.

5. The surgical distance measuring device according to claim 1, characterized in that: The first shell includes a first half shell and a second half shell that are symmetrically arranged. A plurality of card slots are arranged on a side of the first half shell close to the second half shell. A plurality of card blocks that match the card slot structure and have corresponding positions are arranged on a side of the second half shell close to the first half shell.

6. The surgical distance measuring device according to claim 1, characterized in that: It also includes a locking bolt, which is arranged on one side of the connecting block and can abut against the driving screw.

7. The surgical distance measuring device according to claim 1, characterized in that: The displacement sensing component is a pull rod type displacement sensor, one end of the pull rod of the pull rod type displacement sensor is connected to the connecting block, the other end of the pull rod of the pull rod type displacement sensor is connected to the electronic sensing block of the pull rod type displacement sensor, and the electronic sensing block of the pull rod type displacement sensor is electrically connected to the control and display mechanism.

8. The surgical distance measuring device according to claim 1, characterized in that: The control and display mechanism includes a PCB board, a display screen, a digital display switch, a unit switching button and a zeroing button. The PCB board is arranged inside the second shell. The display screen, the digital display switch, the unit switching button and the zeroing button are all arranged on the surface of the second shell away from the outer protective tube. The displacement sensing component, the display screen, the digital display switch, the unit switching button and the zeroing button are all electrically connected to the PCB board.

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