Medical stent operation system

Abstract

The medical stent operating system includes a tube sheath portion having a first cavity, the first cavity extending along the longitudinal direction of the tube sheath portion, a holding portion connected to the tube sheath portion and having a second cavity, an operating portion movably connected to the holding portion, the operating portion having a first operating end and a second operating end, the first operating end being disposed within the second cavity and the second operating end being disposed outside the holding portion, and a stent moving portion connected to the first operating end and extending into the first cavity and the second cavity, an end of the stent moving portion contacting the medical stent, the operating portion moves relative to the holding portion and moves the medical stent via the stent moving portion.

Description

Technical Field

[0001] The present invention relates to a medical stent operation system, and more particularly to a medical stent operation system that assists in placing a medical stent in a human body and supports removing the medical stent from the human body.

Background Art

[0002] Conventional medical stents used in prostate surgery or bladder neck incision surgery can improve the problem of prostate hypertrophy. However, how to place the medical stent at the correct position in the human body or how to remove the medical stent from the human body needs to be carried out by a doctor based on the doctor's experience, which often involves specific risks. In view of the above, there is a need for a medical stent operation system that assists in placing a medical stent in the human body and supports removing the medical stent from the human body.

Summary of the Invention

[0003] In order to solve the above problems, the concept of the present invention is to provide a medical stent operation system that assists in placing a medical stent in a human body and supports removing the medical stent from the human body.

[0004] Based on the above concept, the present invention provides a medical stent operation system including a tube sheath portion having a first cavity, wherein the first cavity extends along the length direction of the tube sheath portion, a holding portion connected to the tube sheath portion and having a second cavity, and an operation portion movably connected to the holding portion. The operation portion has a first operation end and a second operation end, the first operation end is disposed within the second cavity, and the second operation end is disposed outside the holding portion. The system further includes a stent moving portion connected to the first operation end and extending within the first cavity and the second cavity, with the end of the stent moving portion contacting a medical stent. The operation portion moves relative to the holding portion to move the medical stent via the stent moving portion.

[0005] In a preferred embodiment of the present invention, the tube sheath portion has the appearance of a transparent tube.

[0006] In a preferred embodiment of the present invention, the medical stent operation system further includes an optical detection device including a detection unit and a transmission unit. The detection unit is connected to the transmission unit and disposed at the holding end of the holding portion. Further, the detection unit is at least partially disposed within the tube sheath portion and disposed at the tube sheath end of the tube sheath portion. The transmission unit at least partially extends within the first cavity.

[0007] In a preferred embodiment of the present invention, the stent moving portion includes a pressing unit disposed at the end of the stent moving portion. The pressing unit is formed as a hollow cylinder and covers the transmission unit with a sleeve so as to be movable relative to the transmission unit.

[0008] In a preferred embodiment of the present invention, the tube sheath portion includes a tube sheath end having a side communication outlet.

[0009] In a preferred embodiment of the present invention, the stent moving portion includes a hook unit disposed at the end of the stent moving portion.

[0010] In a preferred embodiment of the present invention, the tube sheath portion is detachably connected to the holding portion.

[0011] In a preferred embodiment of the present invention, the stent moving portion includes a pressing unit disposed at an end of the stent moving portion.

[0012] In a preferred embodiment of the present invention, the medical stent has a first expansion section, a second expansion section, and a third expansion section, and the third expansion section is disposed between the first expansion section and the second expansion section. The medical stent operation system includes a stepwise movement mechanism. The operation portion moves stepwise with respect to the holding portion via the stepwise movement mechanism, and the stent moving portion sequentially extrudes the first expansion section, the third expansion section, and the second expansion section from the tube sheath portion stepwise.

[0013] In a preferred embodiment of the present invention, the stepwise movement mechanism is a holding portion having a plurality of fastening holes. The first operation end portion of the operation portion includes a fastening unit, and the fastening unit fastens to one of the plurality of fastening holes during the process of the operation portion moving with respect to the holding portion.

[0014] In a preferred embodiment of the present invention, the plurality of fastening holes include a first fastening hole, a second fastening hole, and a third fastening hole. When the fastening unit is fastened to the first fastening hole, the first expansion section is extruded from the tube sheath portion by the stent moving portion. When the fastening unit is fastened to the second fastening hole, the third expansion section is extruded from the tube sheath portion by the stent moving portion. When the fastening unit is fastened to the third fastening hole, the second expansion section is extruded from the tube sheath portion by the stent moving portion.

[0015] In a preferred embodiment of the present invention, the holding portion has a long through hole extending along the length direction of the holding portion. The first operation end portion of the operation portion includes a protruding unit that protrudes outward through the long through hole and is movable along the long through hole.

[0016] In a preferred embodiment of the present invention, the medical stent has a first expansion section, a second expansion section, and a third expansion section, and the third expansion section is disposed between the first expansion section and the second expansion section. The long through-hole has through-hole ends. By means of the medical stent operation system, the protruding unit contacts the through-hole end, whereby the operation part cannot continue to move relative to the holding part along the extrusion direction. When the protruding unit is in contact with the through-hole end, by means of the medical stent operation system, the second expansion section of the medical stent is partially exposed outside the tube sheath part via the stent moving part.

[0017] In a preferred embodiment of the present invention, the protruding unit receives a first external force and moves away from the through-hole end and away from the long through-hole. The operation part then receives a second external force and moves along the extrusion direction relative to the holding part, and the second expansion section of the stent is pushed out of the tube sheath part by the stent moving part.

[0018] In a preferred embodiment of the present invention, the tube sheath part includes a liquid transport unit communicating with a first cavity. The medical stent operation system transports liquid into the tube sheath part via the liquid transport unit.

[0019] For better understanding, the above and other aspects of the present invention will be described with reference to non-limiting embodiments and the following attached drawings.

Brief Description of the Drawings

[0020]

Figure 1

[0021]

Figure 2A

[0022]

Figure 2B

[0023]

Figure 2C

[0024]

Figure 3

[0025]

Figure 4

[0026]

Figure 5

Mode for Carrying Out the Invention

[0027] Please refer to FIG. 1, which shows a schematic diagram of an example of a medical stent operation system according to a specific embodiment of the present invention. As shown in the embodiment of FIG. 1, the medical stent operation system 1000 includes an operation unit 1100, a holding unit 1200, a tube sheath unit 1300, a stent moving unit (not shown, details will be described later), a light detection device (not shown, details will be described later), and a protection unit 1600. The tube sheath unit 1300 is a hollow element having a first cavity inside, and the first cavity extends along the length direction 810 of the tube sheath unit 1300. Preferably, the tube sheath end 1320 of the tube sheath unit 1300 may have a side communication outlet 1310 (for the detailed configuration of the side communication outlet 1310, reference can be made from the specification of Taiwan Patent Application No. 110103890 entitled "SURGICAL-USE MEDICAL APPARATUS AND SYSTEM THEREFOR". The full text of the above Taiwan Patent Application No. 110103890 is incorporated herein by reference). The holding unit 1200 is a hollow element having a second cavity inside. The tube sheath unit 1300 is detachably connected to the holding unit 1200. The operation unit 1100 is movably connected to the holding unit 1200. The operation unit 1100 includes a first operation end and a second operation end. The first operation end of the operation unit 1100 is disposed in the second cavity of the holding unit 1200, and the second operation end of the operation unit 1100 is disposed outside the holding unit 1200. The connection relationship and operation relationship between the operation unit 1100 and the holding unit 1200 are preferably the same as those of the push rod and the syringe of a general medical syringe device.

[0028] The stent moving part of the medical stent operation system 1000 is connected to the first operation end of the operation part 1100, and the stent moving part extends into the first cavity and the second cavity. During the operation (or movement) of the medical stent by the medical stent operation system 1000, first, the medical stent can be placed in the tube sheath part 1300 (preferably, the medical stent is first placed in the tube sheath part 1300 and is placed at a position close to the tube sheath end 1320 of the tube sheath part 1300), and the medical stent contacts the end of the stent moving part. By moving the operation part 1100 relative to the holding part 1200, the user can move the medical stent through the stent moving part connected to the operation part 1100 and can gradually push out the medical stent from the tube sheath part 1300. The protection part 1600 is detachably installed (for example, plug-connected) at the tube sheath end 1320 of the tube sheath part 1300 so as to protect the tube sheath part 1300 and the stent moving part in the tube sheath part 1300 and the optical detection device. The transmission unit 1520 (for example, the transmission line) of the optical detection device can extend to the end of the holding part 1200 on the side of the operation part 1100. It should be understood that during the use of the medical stent operation system 1000, the protection part 1600 is not required and can be removed from the tube sheath end 1320 of the tube sheath part 1300. In a specific embodiment, the protection part 1600 is not required.

[0029] Please refer to FIG. 2A, which shows a schematic diagram of an example of a holding unit and a light detection device of a medical stent operation system according to a specific embodiment of the present invention. As shown in the embodiment of FIG. 2A, the holding unit 2200 includes a holding main body 2210 and an extension unit (which can also be called a holding extension unit) 2220, and the holding main body 2210 is connected to the extension unit 2220. The holding main body 2210 has fastening holes (also called holding fastening holes) 2232, 2234, 2236, a long through hole 2240, and a holding fastening unit 2250. The fastening hole 2232 is closer to the extension unit 2220 than the long through hole 2240, and the long through hole 2240 extends along the length direction of the holding unit 2200 to the holding main body 2210 of the holding unit 2200. Preferably, the through hole end 2242 of the long through hole 2240 is disposed between the fastening hole 2234 and the fastening hole 2232. The light detection device of the medical stent operation system includes a detection unit 2510 and a transmission unit 2520, and the detection unit 2510 is connected to the transmission unit 2520. The detection unit 2510 is disposed (or connected) at an end of the extension unit 2220 (also called a holding end). The transmission unit 2520 extends into the second cavity of the holding unit 2200 (more specifically, the transmission unit 2520 extends into the extension unit 2220 and into the holding main body 2210 and extends outward from the holding main body 2210). During the operation process of the medical stent operation system, the detection unit 2510 can capture an in-vivo image and transmit the captured image to a display device by the transmission unit for the user to view the image. In a specific embodiment, the transmission unit 2520 may include a processing unit 2530 that can assist in processing the image captured by the detection unit 2510.

[0030] Please refer to FIG. 2B, which shows a schematic diagram of an example of an operation unit and a stent moving unit of a medical stent operation system according to a specific embodiment of the present invention. As shown in the embodiment of FIG. 2B, the operation unit 2100 includes a first operation end 2110, a second operation end 2120, a fastening unit 2130, and a protruding unit 2140. Both the fastening unit 2130 and the protruding unit 2140 are arranged at the first operation end 2110. One end of the stent moving unit 2400 is connected to the operation unit 2100, and the other end of the stent moving unit 2400 (or the end or the stent moving end) includes a pressing unit 2410. Thus, when the user moves (or operates) the operation unit 2100, the stent moving unit 2400 moves together with the operation unit 2100, thereby pressing the medical stent by the pressing unit 2410. In a specific embodiment, the end of the stent moving unit 2400 does not include a pressing unit but includes a hook unit. Thereby, after the user hooks the medical stent by the hook unit, the user can pull the medical stent by moving (or operating) the operation unit 2100. FIG. 3 shows an example of an end of the stent moving unit 2400 having a hook unit according to a specific embodiment. As shown in the embodiment of FIG. 3, the end of the stent moving unit 3400 includes a hook unit 3420.

[0031] Please refer to FIG. 2C, which shows a schematic diagram of an example of the tube sheath portion of a medical stent operation system according to a specific embodiment of the present invention. As shown in the embodiment of FIG. 2C, the tube sheath portion 2300 includes a tube sheath main body 2370, a tube sheath expansion unit 2330, liquid transport units 2340 and 2350, and a fastening hole (or a tube sheath fastening hole) 2360. The tube sheath main body 2370 is connected to the tube sheath expansion unit 2330, the liquid transport units 2340 and 2350 are connected to the tube sheath main body 2370, and the fastening hole 2360 is disposed in the tube sheath main body 2370. The liquid transport units 2340 and 2350 communicate with the first cavity of the tube sheath portion 2300. Therefore, a liquid (e.g., but not limited to, water or physiological saline) can be transported into the tube sheath portion 2300 through the liquid transport units 2340 and 2350.

[0032] Please refer to FIGS. 2A, 2B, and 2C. The stent moving portion 2400 can extend into the first cavity of the tube sheath portion 2300 and into the second cavity of the holding portion 2200. The end of the stent moving portion 2400 can contact the medical stent. For example, when the end of the stent moving portion 2400 includes a pressing unit 2410, the medical stent can be gradually pushed out of the tube sheath portion 2300 by the pressing unit 2410 of the stent moving portion 2400. When the end of the stent moving portion 2400 includes a hook unit, the medical stent can be gradually pulled into the tube sheath portion 2300 by the hook unit of the stent moving portion 2400.

[0033] Both the stent moving part 2400 and the expansion unit 2220 of the holding part 2200 can extend into the first cavity of the tube sheath part 2300. Preferably, when the end of the stent moving part 2400 includes the pressing unit 2410, the pressing unit 2410 is formed as a hollow cylinder, and the pressing unit 2410 can cover the transmission unit 2520 and the expansion unit 2220 with a sleeve so as to be movable relative to the transmission unit 2520 and the expansion unit 2220. FIG. 4 shows a partial schematic view of an example of a tube sheath part, an expansion unit, and a pressing unit according to a specific embodiment. As shown by the embodiment of FIG. 4, the holding and expansion unit 4220 and the stent moving part 4440 are arranged in the tube sheath expansion unit 4330. The end of the stent moving part 4400 includes the pressing unit 4410. The pressing unit 4410 is formed as a hollow cylinder, and the pressing unit 4410 covers the holding and expansion unit 4220 with a sleeve so as to be movable relative to the holding and expansion unit 4220. Since the transmission unit of the light detection device extends into the holding and expansion unit 4220, the pressing unit 4410 also covers the transmission unit with a sleeve so as to be movable relative to the transmission unit. With the above configuration, when the user moves the operation part relative to the holding part so that the pressing unit 4410 moves relative to the holding and expansion unit 4220 and the transmission unit, the detection unit 4510 located at the end of the holding and expansion unit 4220 can continue to capture images without being affected by the pressing unit 4410. Preferably, the tube sheath part has the appearance of a transparent tube, or at least the tube sheath expansion unit 4330 of the tube sheath part has the appearance of a transparent tube, whereby the tube sheath expansion unit 4330 of the tube sheath part can prevent blocking the visual field of the detection unit 4510. In a specific embodiment, the transmission unit extends partially into the holding and expansion unit 4220 (that is, the transmission unit extends partially into the first cavity of the tube sheath part), and the transmission unit extends partially into the second cavity of the holding part.Preferably, during the process of capturing an image by the detection unit 4510, the detection unit 4510 is preferably disposed within the tube sheath expansion unit 4330 of the tube sheath portion and is disposed (or installed) at the tube sheath end of the tube sheath expansion unit 4330. The detection unit 4510 may be completely installed within the tube sheath portion or may be slightly exposed outside the tube sheath portion as required. When the holding expansion unit 4220 moves relative to the tube sheath expansion unit 4330 (for example, when the holding expansion unit 4220 is removed from the inside of the tube sheath expansion unit 4330), the detection unit 4510 can move relative to the tube sheath expansion unit 4330 together with the holding expansion unit 4220 (for example, the detection unit 4510 can be removed from the inside of the tube sheath expansion unit 4330 together with the holding expansion unit 4220).

[0034] FIG. 5 shows a partial schematic view of an example of a tube sheath portion, an extension unit, and a hook unit according to a specific embodiment. As shown in the embodiment of FIG. 5, a holding and extension unit 5220 and a stent moving unit 5400 are disposed within a tube sheath extension unit 5330, and an end of the stent moving unit 5400 includes a hook unit 5420. When a user moves an operation unit relative to a holding unit such that the hook unit 5420 moves relative to the holding and extension unit 5220 and a transmission unit, a detection unit 5510 located at an end of the holding and extension unit 5220 can continue to capture an image without being affected by the hook unit 5420. Preferably, the tube sheath portion has the appearance of a transparent tube, or at least the tube sheath extension unit 5330 of the tube sheath portion has the appearance of a transparent tube, whereby the tube sheath extension unit 5330 of the tube sheath portion can prevent blocking the field of view of the detection unit 5510. Preferably, during the process of capturing an image by the detection unit 5510, the detection unit 5510 is preferably disposed within the tube sheath extension unit 5330 of the tube sheath portion and is disposed (or installed) at the tube sheath end of the tube sheath extension unit 5330. The detection unit 5510 may be completely installed within the tube sheath portion or may be slightly exposed outside the tube sheath portion as required. When the holding and extension unit 5220 moves relative to the tube sheath extension unit 5330 (for example, when the holding and extension unit 5220 is removed from the inside of the tube sheath extension unit 5330), the detection unit 5510 can move relative to the tube sheath extension unit 5330 together with the holding and extension unit 5220 (for example, the detection unit 5510 can be removed from the inside of the tube sheath extension unit 5330 together with the holding and extension unit 5220).

[0035] The medical stent operated (or moved) by the medical stent operating system of the present invention can have a first expansion section, a second expansion section, and a third expansion section, and the third expansion section is disposed between the first expansion section and the second expansion section (for such a medical stent, refer to the above Taiwan Patent Application No. 110103890. However, it should be understood that the medical stent operating system is not limited to being applicable only to such types of medical stents). The medical stent operating system of the present invention includes a stepwise movement mechanism, and the operating part moves stepwise relative to the holding part through the stepwise movement mechanism, and the stent moving part sequentially pushes out the first expansion section, the third expansion section, and the second expansion section from the tube sheath part stepwise. The stepwise movement mechanism can be, for example, the housing device shown in FIGS. 7 to 8C, similar to that of the above Taiwan Patent Application No. 110103890, but is not limited thereto.

[0036] Referring to FIGS. 2A, 2B, and 2C, the stepwise movement mechanism of the medical stent operation system may be the holding part 2200. The holding body 2210 thereof includes fastening holes 2232, 2234, and 2236, and the first operation end 2110 of the operation part 2100 includes a fastening unit 2130. During the process of the operation part 2100 moving relative to the holding part 2200, the fastening unit 2130 can be fastened to any one of the fastening holes 2232, 2234, and 2236. When the fastening unit 2130 is fastened to the fastening hole 2236 (the fastening hole 2236 may also be referred to as the first fastening hole), the first expansion section of the medical stent is pushed out from the tube sheath end 2320 of the tube sheath part 2300 by the pressing unit 2410 of the stent moving part 2400. When the fastening unit 2130 is fastened to the fastening hole 2234 (the fastening hole 2234 may also be referred to as the second fastening hole), the third expansion section of the medical stent is pushed out from the tube sheath end 2320 of the tube sheath part 2300 by the pressing unit 2410 of the stent moving part 2400. When the fastening unit 2130 is fastened to the fastening hole 2232 (the fastening hole 2232 may be referred to as the third fastening hole), the second expansion section of the medical stent is pushed out from the tube sheath end 2320 of the tube sheath part 2300 by the pressing unit 2410 of the stent moving part 2400. With the above stepwise movement mechanism, the user can stepwise arrange the first expansion section, the third expansion section, and the second expansion section of the medical stent respectively to correct the position in the human body (the correct arrangement positions of the first expansion section, the third expansion section, and the second expansion section can be referred to from the specification of the above Taiwan Patent Application No. 110103890). Preferably, when the fastening unit 2130 is fastened to any one of the fastening holes 2232, 2234, and 2236, the user can further release the fastening between the fastening unit 2130 and the corresponding fastening hole by applying a large force, and continuously press or pull the operation part 2100 relative to the holding part 2200.

[0037] The protruding unit 2140 of the operation unit 2100 can protrude outward from the long through-hole 2240 (the details of its structure can be referred to from the protruding unit 1140 and the long through-hole 1240 shown in FIG. 1), and the protruding unit 2140 is movable along the long through-hole 2240 of the holding unit 2200. Therefore, when the operation unit 2100 moves relative to the holding unit 2200, the protruding unit 2140 does not affect the operation between the operation unit 2100 and the holding unit 2200. However, during the process of the fastening unit 2130 moving from the fastening hole 2234 to the fastening hole 2232, before the fastening unit 2130 is fastened to the fastening hole 2232, the protruding unit 2140 first contacts the through-hole end 2242 of the long through-hole 2240, whereby the operation unit 2100 cannot continue to move relative to the holding unit 2200 along the extrusion direction 820. At this point, the second expansion section of the medical stent is partially exposed outside the tube sheath end 2320 of the tube sheath portion 2300. The above mechanism can prevent the second expansion section from being completely pushed out immediately from the tube sheath end 2320 due to excessive force being applied, and thus prevent the second expansion section from being disposed at the wrong position or the medical stent from damaging the human body.

[0038] When the protruding unit 2140 contacts the through-hole end 2242 of the long through-hole 2240, the user can apply a first external force to the protruding unit 2140 (for example, the first external force is a force pressing the protruding unit 2140 and is a force perpendicular to the expansion direction of the operation unit 2100), whereby the protruding unit 2140 moves away from the through-hole end 2242 and away from the long through-hole 2240. Next, the user can apply a second external force to the operation unit 2100 (that is, continue to push the operation unit 2100 in the direction 830), whereby the operation unit 2100 moves relative to the holding unit 2200 along the extrusion direction 820, and the second expansion section of the medical stent is pushed out from the tube sheath end 2320 of the tube sheath portion 2300 by the pressing unit 2410 of the stent moving unit 2400.

[0039] The holding and fastening unit 2250 of the holding part 2200 can be fastened to the fastening hole 2360 of the tube sheath part 2300 so as to securely connect the holding part 2200 in the tube sheath part 2300. The user can, if necessary, release the fastening between the fastening unit 2250 and the fastening hole 2360 and further separate the holding part 2200 from the tube sheath part 2300. For example, during the process in which the user removes a medical stent from inside the patient's body to outside the body by means of a medical stent operation system, first, the medical stent is hooked by the hook part of the stent moving part 2400, and then, the fastening between the fastening unit 2250 and the fastening hole 2260 is released, and the expansion unit 2220 of the stent moving part 2400 and / or the holding part 2200 pulls the operation part 2100 and / or the holding part 2200 to remove them from the inside to the outside of the tube sheath expansion unit 2330. Thereby, the medical stent is removed outside the body together with the hook unit.

[0040] The medical stent operation system of the present invention has been described in detail with reference to the above description and drawings. However, it should be understood that the specific embodiments of the present invention are for illustrative purposes, and various modifications that can be made without departing from the scope and spirit of the claims of the present invention should be included within the scope of the appended claims. Therefore, the specific embodiments given in the description of the present disclosure should not be construed as limitations on the present invention, and the essential scope and spirit of the present invention are as disclosed in the appended claims.

Claims

1. A tube sheath portion having a first cavity, wherein the first cavity extends along the length direction of the tube sheath portion, the tube sheath portion, and A holding portion connected to the tube sheath portion and having a second cavity, An operation portion movably connected to the holding portion, the operation portion including a first operation end portion and a second operation end portion, the first operation end portion being disposed within the second cavity, and the second operation end portion being disposed outside the holding portion, the operation portion; A stent moving portion connected to the first operation end portion and extending into the first cavity and into the second cavity, an end portion of the stent moving portion contacting a medical stent, the stent moving portion A medical stent operation system comprising The operation portion moves relative to the holding portion, and the stent moving portion moves together with the operation portion to move the medical stent via the stent moving portion. Medical stent operation system.

2. The tube sheath portion has an appearance of a transparent tube. The medical stent operation system according to Claim 1.

3. Further comprising an optical detection device including a detection unit and a transmission unit, the detection unit being connected to the transmission unit, The detection unit is disposed at a holding end portion of the holding portion. The detection unit is at least partially disposed within the tube sheath portion and is disposed at a tube sheath end portion of the tube sheath portion. The transmission unit extends at least partially into the first cavity. The medical stent operation system according to Claim 1.

4. The stent moving portion includes a pressing unit disposed at an end portion of the stent moving portion, the pressing unit being formed as a hollow cylinder and covering the transmission unit with a sleeve so as to be movable relative to the transmission unit. The medical stent operation system according to Claim 3.

5. The tube sheath portion includes a tube sheath end portion having a side communication outlet. The medical stent operation system according to Claim 1.

6. The stent moving portion includes a hook unit disposed at an end portion of the stent moving portion. The medical stent operation system according to Claim 1.

7. The tube sheath portion is detachably connected to the holding portion. The medical stent operation system according to Claim 1.

8. The stent moving part includes a pressing unit disposed at an end of the stent moving part. The medical stent operating system according to claim 1.

9. The medical stent has a first expansion section, a second expansion section, and a third expansion section, and the third expansion section is disposed between the first expansion section and the second expansion section. The medical stent operating system includes a stepwise movement mechanism, the operating part moves stepwise relative to the holding part through the stepwise movement mechanism, and the first expansion section, the third expansion section, and the second expansion section are sequentially pushed out of the tube sheath part stepwise by the stent moving part. The medical stent operating system according to claim 1.

10. The stepwise movement mechanism is the holding part having a plurality of fastening holes, the first operating end of the operating part includes a fastening unit, and the fastening unit fastens to one of the plurality of fastening holes during the process of the operating part moving relative to the holding part. The medical stent operating system according to claim 9.

11. The plurality of fastening holes include a first fastening hole, a second fastening hole, and a third fastening hole. When the fastening unit is fastened to the first fastening hole, the first expansion section is pushed out of the tube sheath part by the stent moving part. When the fastening unit is fastened to the second fastening hole, the third expansion section is pushed out of the tube sheath part by the stent moving part. When the fastening unit is fastened to the third fastening hole, the second expansion section is pushed out of the tube sheath part by the stent moving part. The medical stent operating system according to claim 10.

12. The holding part has a long through hole extending along the length direction of the holding part, the first operating end of the operating part includes a protruding unit, the protruding unit protrudes outward through the long through hole and is movable along the long through hole. The medical stent operating system according to claim 1.

13. The medical stent has a first expansion section, a second expansion section, and a third expansion section, and the third expansion section is disposed between the first expansion section and the second expansion section. The long through-hole has a through-hole end portion, and the medical stent operating system causes the protruding unit to contact the through-hole end portion, whereby the operating portion cannot continue to move relative to the holding portion along the extrusion direction. When the protruding unit is in contact with the through-hole end portion, the medical stent operating system causes the second expansion section of the medical stent to be partially exposed outside the tube sheath portion through the stent moving portion. The medical stent operating system according to claim 12.

14. The protruding unit receives a first external force and moves away from the through-hole end portion and away from the long through-hole. Next, the operating portion receives a second external force and moves relative to the holding portion along the extrusion direction, and the stent moving portion causes the second expansion section to be pushed out of the tube sheath portion. The medical stent operating system according to claim 13.

15. The tube sheath portion includes a liquid transport unit communicating with the first cavity, and the medical stent operating system transports liquid into the tube sheath portion through the liquid transport unit. The medical stent operating system according to claim 1.

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