Analog simulation incision knife instrument

Abstract

The utility model relates to the technical field of digestive endoscopy simulation surgical instruments, and discloses an analog simulation incision knife instrument which comprises a sliding ring, one end of the sliding ring is fixedly connected with a connecting piece, a polytetrafluoroethylene tube is installed in an outer sleeve, a potentiometer is installed at the position, located in the sliding ring, of the front side of a handle, and the potentiometer is connected with the connecting piece. A spring is connected between the handle and the sliding ring in a sleeved mode, and a set of sliding ring buckles are installed at the two ends of the outer side of the sliding ring. According to the utility model, by simulating the entering depth of the insertion part of the incision knife through the shape similar to that of a real incision knife and the same operation method, and by lifting the slip ring, the progressive incision action of lifting the knife arch can be simulated, and by rotating the incision knife, the incision direction of the knife wire can be simulated and controlled; meanwhile, a guide wire can be inserted into an incision knife instrument opening, the insertion length of the guide wire is detected, simulated tactile and visual feedback is provided for an operator, and then digital simulation training of a retrograde cholangiopancreatography operation under a digestive endoscope is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of digestive endoscope simulation surgical instruments, in particular to a simulation incision knife instrument. Background Art

[0002] Endoscopic retrograde cholangiopancreatography (ERCP) is an invasive examination or treatment procedure that requires the injection of contrast agent into the bile and pancreatic ducts under X-ray fluoroscopy to visualize their anatomical structure and function. Due to the complex anatomical location of the bile and pancreatic ducts and the potential for stenosis and stones, the procedure is challenging. Furthermore, the patient's reactions and potential complications must be closely monitored during the procedure, further increasing the difficulty of the procedure. To enhance the skills and proficiency of interns and medical students, simulation training using instrument simulation is necessary.

[0003] However, current simulated incision instruments often cannot truly and effectively reflect the movements and positions during surgery, and thus cannot provide real tactile and visual feedback, resulting in poor simulation training effects. Utility Model Content

[0004] The purpose of the present invention is to provide a simulated incision knife instrument to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A simulated incision knife instrument includes a slip ring, one end of the slip ring is fixedly connected to a connecting piece, and a handle is embedded in the other end of the slip ring, one end of the connecting piece is fixedly connected to a core rod, one end of the core rod is embedded in an outer sleeve, a polytetrafluoroethylene tube is installed inside the outer sleeve, a potentiometer is installed on the front side of the handle inside the slip ring, and a spring is sleeved between the handle and the slip ring, a group of slip ring buckles are installed at both ends of the outer side of the slip ring, and a slip ring cover is provided on the front side of the slip ring.

[0007] As a further solution of the present invention: an angle posture module is installed at the bottom of the potentiometer.

[0008] As a further solution of the present invention: a resistance wire is embedded and installed at one end of the outer sleeve, and a plastic-coated steel wire is provided at one end of the resistance wire.

[0009] As a further solution of the present invention: a guide wire inlet tube is provided on the outside of the core rod, a shrapnel carrier is embedded on the inside of the guide wire inlet tube, a shrapnel is embedded on the inside of the shrapnel carrier, a guide wire inlet cap is embedded and installed at one end of the guide wire inlet tube near the shrapnel, the inner center positions of the core rod, shrapnel carrier, shrapnel and guide wire inlet cap jointly form a guide wire channel, and one end of the guide wire channel is connected to the polytetrafluoroethylene tube.

[0010] As a further solution of the present invention: an external threaded hole is opened at one end of the outer side of the connecting piece, and an internal threaded hole corresponding to the external threaded hole is opened at one end of the outer side of the core rod, and a top screw is embedded in the inner sides of the external threaded hole and the internal threaded hole.

[0011] As a further solution of the present invention: the connecting piece and the slip ring are fixedly connected by interference fit.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model simulates the depth of insertion of the incision knife through an appearance similar to that of a real incision knife and the same operating technique. By pulling the sliding ring, the action of pulling the knife bow for progressive incision can be simulated. The incision direction of the knife wire can also be controlled by rotating the incision knife. At the same time, a guide wire can be inserted into the instrument port of the incision knife and the insertion length of the guide wire can be detected, providing the operator with simulated tactile and visual feedback, thereby realizing digital simulation training of retrograde cholangiopancreatography surgery under digestive endoscopy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a simulated incision knife instrument;

[0015] Figure 2 This is a schematic diagram of the partial structure of a simulated incision knife instrument;

[0016] Figure 3 A schematic diagram of the partial decomposition structure of a simulated incision knife instrument;

[0017] Figure 4 It is a partial cross-sectional schematic diagram of a simulated incision knife instrument.

[0018] In the figure: 1. Plastic-coated steel wire; 2. Resistance wire; 3. Outer sleeve; 4. Core rod; 41. Guide wire inlet tube; 5. Shrapnel carrier; 6. Shrapnel; 7. Guide wire inlet cap; 8. Top screw; 81. Internal threaded hole; 82. External threaded hole; 9. Connector; 10. Spring; 11. Slip ring; 111. Slip ring buckle; 12. Slip ring cover; 13. Potentiometer; 14. Handle; 15. Polytetrafluoroethylene tube; 16. Guide wire channel; 17. Guide wire. DETAILED DESCRIPTION

[0019] See also Figures 1 to 4 In an embodiment of the present invention, a simulation cutting knife instrument includes a slip ring 11, one end of the slip ring 11 is fixedly connected to a connector 9, and a handle 14 is embedded in the other end of the slip ring 11, one end of the connector 9 is fixedly connected to a core rod 4, one end of the core rod 4 is embedded in an outer sleeve 3, a polytetrafluoroethylene tube 15 is installed inside the outer sleeve 3, the front side of the handle 14 is located inside the slip ring 11 and a potentiometer 13 is installed, and a spring 10 is sleeved between the handle 14 and the slip ring 11, a group of slip ring buckles 111 are installed at both ends of the outer side of the slip ring 11, and a slip ring cover 12 is provided on the front side of the slip ring 11, through which the slip ring 11 and the slip ring 11 are connected. The lock between the handles 14 is released, and the operator holds the slip ring buckle 111 with the index finger and middle finger, and holds the handle 14 with the thumb, and presses the handle 14 with the thumb, so that the handle 14 slides on the inner side of the slip ring 11 and squeezes the spring 10. After releasing the thumb, the handle 14 is driven to rebound by the spring 10, and the rebound of the spring 10 simulates the rebound force of the guide wire 17 in the actual operation, thereby obtaining a simulated hand feel; when the handle 14 slides on the inner side of the slip ring 11, the sliding part of the potentiometer 13 also slides, and its resistance changes. The sliding position change signal is obtained through the change in resistance, thereby simulating the action of lifting the knife bow for progressive incision.

[0020] exist Figure 3 and Figure 4 In the figure, an angle attitude module is installed at the bottom of the potentiometer 13. The operator controls the angle of the entire instrument and detects the rotation angle of the handle 14 in the X direction through the angle attitude module, thereby simulating the cutting direction of the blade.

[0021] exist Figure 1 、 Figure 2 and Figure 3 In the figure, a resistance wire 2 is embedded in one end of the outer sleeve 3, and a plastic-coated steel wire 1 is provided at one end of the resistance wire 2. By detecting the resistance change of the resistance wire 2, the position of the plastic-coated steel wire 1 is obtained, thereby simulating the depth of the incision knife insertion part into the endoscope.

[0022] exist Figure 2 、 Figure 3 and Figure 4In the figure, a guide wire inlet tube 41 is provided on the outside of the core rod 4, and a shrapnel carrier 5 is embedded on the inside of the guide wire inlet tube 41, and a shrapnel 6 is embedded on the inside of the shrapnel carrier 5. A guide wire inlet cap 7 is embedded and installed at one end of the guide wire inlet tube 41 near the position of the shrapnel 6. The inner center position of the core rod 4, the shrapnel carrier 5, the shrapnel 6 and the guide wire inlet cap 7 together form a guide wire channel 16, one end of the guide wire channel 16 is connected to the polytetrafluoroethylene tube 15, and the guide wire 17 is inserted into the guide wire channel 16 from the guide wire inlet cap 7. One end of the guide wire 17 is inserted into the polytetrafluoroethylene tube 15 to a certain length, thereby simulating the process of inserting the guide wire in a real endoscopic surgery; and simulating the detection of the length of the guide wire 17 entering the endoscope; the shrapnel 6 is limited by the shrapnel carrier 5, and then the guide wire 17 is limited by the shrapnel 6, so that good contact and small resistance are maintained between the guide wire 17 and the shrapnel 6; the diameter of the guide wire 17 can be 1.2 mm.

[0023] exist Figure 3 In the figure, an external threaded hole 82 is provided at one end of the outer side of the connecting piece 9, and an internal threaded hole 81 corresponding to the external threaded hole 82 is provided at one end of the outer side of the core rod 4. A top screw 8 is embedded in the inner sides of the external threaded hole 82 and the internal threaded hole 81, and the core rod 4 and the connecting piece 9 are fixed together by the top screw 8.

[0024] exist Figure 3 In the embodiment, the connector 9 and the slip ring 11 are fixedly connected by interference fit, so that the connector 9 and the slip ring 11 can be fixedly connected together and the connector 9 can be easily pulled out from the slip ring 11.

[0025] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A simulated incision knife instrument, comprising a slip ring (11), characterized in that: One end of the slip ring (11) is fixedly connected to a connector (9), and a handle (14) is embedded in the other end of the slip ring (11); one end of the connector (9) is fixedly connected to a core rod (4), and one end of the core rod (4) is embedded in an outer sleeve (3); a polytetrafluoroethylene tube (15) is installed inside the outer sleeve (3); a potentiometer (13) is installed on the front side of the handle (14) inside the slip ring (11), and a spring (10) is sleeved between the handle (14) and the slip ring (11); a group of slip ring buckles (111) are installed at both ends of the outer side of the slip ring (11), and a slip ring cover (12) is provided on the front side of the slip ring (11).

2. The simulated incision knife instrument according to claim 1, characterized in that: An angle attitude module is installed at the bottom of the potentiometer (13).

3. The simulated incision knife instrument according to claim 1, characterized in that: A resistance wire (2) is embedded and installed at one end of the outer sleeve (3), and a plastic-coated steel wire (1) is provided at one end of the resistance wire (2).

4. The simulated incision knife instrument according to claim 1, characterized in that: A guide wire inlet tube (41) is provided on the outer side of the core rod (4), a shrapnel carrier (5) is embedded in the inner side of the guide wire inlet tube (41), a shrapnel (6) is embedded in the inner side of the shrapnel carrier (5), a guide wire inlet cap (7) is embedded and installed at a position close to the shrapnel (6) at one end of the guide wire inlet tube (41), and the inner center positions of the core rod (4), the shrapnel carrier (5), the shrapnel (6) and the guide wire inlet cap (7) jointly form a guide wire channel (16), and one end of the guide wire channel (16) is connected to the polytetrafluoroethylene tube (15).

5. The simulated incision knife instrument according to claim 1, characterized in that: An external threaded hole (82) is provided at one end of the outer side of the connecting piece (9), and an internal threaded hole (81) corresponding to the external threaded hole (82) is provided at one end of the outer side of the core rod (4). A top screw (8) is embedded in the inner sides of the external threaded hole (82) and the internal threaded hole (81).

6. The simulated incision knife instrument according to claim 1, characterized in that: The connecting piece (9) and the slip ring (11) are fixedly connected by interference fit.

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