WO2016169044A1 - 一种可拆解的微创手术取物袋 - Google Patents

一种可拆解的微创手术取物袋 Download PDF

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Publication number
WO2016169044A1
WO2016169044A1 PCT/CN2015/077362 CN2015077362W WO2016169044A1 WO 2016169044 A1 WO2016169044 A1 WO 2016169044A1 CN 2015077362 W CN2015077362 W CN 2015077362W WO 2016169044 A1 WO2016169044 A1 WO 2016169044A1
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WO
WIPO (PCT)
Prior art keywords
inner tube
bag
sliding seat
sphere
detachable
Prior art date
Application number
PCT/CN2015/077362
Other languages
English (en)
French (fr)
Inventor
陈维中
陈新丰
Original Assignee
联合微创医疗器械（深圳）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 联合微创医疗器械（深圳）有限公司 filed Critical 联合微创医疗器械（深圳）有限公司
Publication of WO2016169044A1 publication Critical patent/WO2016169044A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/04—Endoscopic instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00287—Bags for minimally invasive surgery

Definitions

  • the invention relates to the field of medical devices, and in particular to a bag for taking objects.
  • the specimen bag can be taken out from the body by cooperation with the puncturing device. After perfecting the technology, it has been widely used in various abdominal operations.
  • the commonly used bag includes an elastic body, a specimen bag, an outer tube and an inner tube.
  • the elastic body is mounted on the inner tube, is disposed around the bag mouth of the specimen bag, and is contracted integrally with the specimen bag in the outer tube, and the inner tube is first pushed during use.
  • the specimen bag is extended from the outer tube, the mouth of the bag is opened under the action of the elastic body, and after the specimen is placed, the inner tube is pulled to return the elastic body to the outer tube, and the mouth of the bag is blocked by the outer tube to generate a displacement relative to the elastic body.
  • a bag has been invented, and the specimen bag and the inner tube can be separated.
  • a pull wire is provided, one end of the pull wire is connected with the inner tube, and the other end is wrapped with the elastic body around the specimen bag. Bag mouth set. After the specimen has been placed in the specimen bag, pull the inner tube to separate the elastic body from the specimen bag, and tighten the bag mouth by pulling the wire. When the bag mouth is tightened, the wire is separated from the inner tube, so that the inner tube and the sleeve can be made. The tube is withdrawn from the trocar, thereby relieving the occupation of the surgical channel. After the end of the operation, the pull wire is pulled out together with the puncturing device to complete the removal operation of the specimen bag, and then there are some problems in the bag:
  • the pull wire is arranged on the outer side of the outer tube, which not only affects the appearance, but also easily entangles with other objects during use, thereby causing damage to the bag;
  • the prior art bag is provided with an indicator on the inner tube or the outer tube, and the visual inspection of the inner tube determines whether the inner tube has reached the designated position, thereby indirectly determining whether the bag mouth has been tightened.
  • the method is neither intuitive nor easy to cause the bag to shrink incompletely, which affects the use effect;
  • the prior art pull wires are generally wound or fixed on the inner tube, and need to be manually unwound when separated, or need to be broken by separation, which is inconvenient to use.
  • the present invention provides a detachable minimally invasive surgical pouch bag, which can accurately position the inner tube to ensure that the specimen pouch is separated from the inner tube after being completely locked;
  • the structure only needs one step operation, and even the operation can complete the switching between the locked state and the separated state without using the operation, and the use is very convenient; the wire can be effectively protected, and the whole of the sample bag is more compact and beautiful.
  • a detachable minimally invasive surgical bag includes an outer tube, an inner tube, an elastic body and a specimen bag, the inner tube is sleeved in the outer tube and slidable relative thereto; the specimen bag can be pushed forward with the inner tube Extending from the outer tube and being stretched by the elastic body, the elastic body can be separated from the specimen bag with the backward withdrawal of the inner tube, thereby realizing disassembly of the specimen bag and the inner tube and the outer tube, including
  • a pull wire is drawn through the inner tube, and after the elastic body is separated from the specimen bag, the bag mouth of the specimen bag is tightened with the movement of the inner tube, and separated from the inner tube after the bag mouth is completely tightened;
  • a locking structure which can fix the cable to the inner tube before the bag mouth is fully tightened, and can unlock the wire after the bag mouth is completely tightened.
  • the positioning structure comprises a boss fixed to the outer circumference of the inner tube, and an elastic collar fixed to the inner wall of the outer tube, the boss is conical, and the direction of pulling back along the inner tube is gradually smaller.
  • the two ends of the boss form a limiting plane, and the elastic collar is provided with a cavity having the same shape as the boss, and the entrance of the cavity is smaller than the maximum of the circumference of the boss;
  • the inlet can be elastically deformed under the pressing of the boss, so that the boss enters the cavity, and can return to the original state after the boss completely enters, and the inner wall of the cavity abuts the limiting plane to fix the boss in the cavity. in vivo.
  • one end of the cable that is not connected to the specimen bag is provided with a ball, and the wire can be fixed to the inner tube by the locking structure of the ball.
  • the inner tube includes a passage penetrating therethrough in the axial direction.
  • the cross section of the passage is circular, and the cross-sectional diameter is larger than the diameter of the sphere to facilitate passage of the sphere, and the wire and the sphere are bored in the passage.
  • the locking structure comprises a sliding seat mounted on the inner tube, which is movable along the radial direction of the inner tube, the sliding seat is provided with a container cavity and an upper locking member, and the cavity is used for the cavity Positioning the ball, the locking structure further includes a lower locking member disposed under the sliding seat, wherein
  • the sliding seat In the initial state, the sliding seat is resisted by the lower locking member, and the gap between the sliding seat and the passage is smaller than the diameter of the spherical body to restrain the spherical body in the container cavity;
  • the upper locking member and/or the lower locking member are forced to elastically deform, so that the sliding seat moves downward until the container cavity directly communicates with the passage to release the ball, and the upper locking member and the locking member are The lower locking members are fastened to each other to fix the slider in the current position.
  • the upper locking member comprises a pair of hooks disposed at the bottom of the sliding seat, the hook can be elastically deformed, the lower locking member comprises a vertical protruding portion, and the protruding portion has an enlarged portion
  • the size of the enlarged portion is larger than the gap between the hooks, so that the sliding seat is received above the lower locking member; the contact portion between the enlarged portion and the hook is provided with a slope, and the hook passes through the inclined surface and deforms itself, and can extend along the extension The exit moves and eventually snaps underneath the enlarged portion.
  • the locking structure comprises a sliding seat and a holding member mounted on the inner tube, the sliding seat can move along the axial direction of the inner tube, the holding members are arranged in pairs, and the radial direction along the inner tube can occur.
  • the elastic movement the holding member is provided with a sloped surface, so as to form a conical sliding groove between the two holding members, the sliding groove is gradually enlarged in the direction of the inner tube, and the sliding seat is provided with a conical sliding a slot-fitted tapered guide block, wherein
  • the smallest end of the tapered chute is smaller than the diameter of the sphere to limit the sphere within the chute;
  • the locking structure comprises a sliding seat mounted on the inner tube, the sliding seat is movable along the axial direction of the inner tube, and a stopper is arranged thereon, and a stepped sliding groove is arranged below the sliding seat.
  • the chute includes at least a first step and a second step, the distance between the block and the first step is smaller than the diameter of the ball, and the distance between the second step and the second step is greater than the diameter of the ball, wherein
  • the slider In the initial state, the slider is located above the first step, thereby confining the ball in a space formed by the slider, the stopper and the first step;
  • the ball By applying an external force to the carriage, forcing it to move integrally with the ball to the second step, the ball can enter the channel by the second step.
  • the locking structure comprises a sliding seat mounted on the inner tube, the sliding seat is movable along the axial direction of the inner tube, and a stopper is arranged thereon, and a stepped sliding groove is arranged below the sliding seat.
  • the sliding slot includes at least a first step and a second step.
  • the first step is provided with a protrusion at an end of the second step. The distance between the block and the protrusion is smaller than the diameter of the ball, and the distance between the second step and the second step is larger than the diameter of the ball. ,among them
  • the sliding seat In the initial state, the sliding seat is located above the first step, thereby confining the ball in a space formed by the sliding seat, the stopper, the first step and the protrusion;
  • the ball By applying an external force to the ball, when the external force is less than a critical value, the ball continues to be held in the space. When the external force is greater than the critical value, the ball falls onto the second step and drives the slide to move in the axial direction.
  • the slider is provided with an indicator, and the corresponding position of the inner tube is provided with an indication mark, and the indicator can cooperate with the indication mark during the movement of the sliding seat to indicate the position state of the spherical body.
  • the inner tube can be accurately positioned to ensure that the specimen bag is separated from the inner tube after being completely locked; the locking structure is provided, and only one step operation is required, and even between the locked state and the separated state, the wire can be completed without operation. Switching, very convenient to use; can effectively protect the cable, making the specimen bag more compact and beautiful.
  • Figure 1 is an isometric view of the overall structure of the present invention.
  • FIG. 2 is a schematic view showing the combination of the inner tube, the wire, and the sphere according to the present invention
  • Figure 3 is a cross-sectional view showing an embodiment of the positioning structure of the present invention.
  • Figure 4 is an axial cross-sectional view showing a first embodiment of the locking structure of the present invention
  • Figure 5 is a radial cross-sectional view showing a first embodiment of the locking structure of the present invention.
  • Figure 6 is an axial cross-sectional view showing a second embodiment of the locking structure of the present invention.
  • Figure 7 is a radial cross-sectional view of a second embodiment of the locking structure of the present invention.
  • Figure 8 is an axial cross-sectional view showing a third embodiment of the locking structure of the present invention.
  • Figure 9 is a radial cross-sectional view showing a third embodiment of the locking structure of the present invention.
  • Figure 10 is an axial cross-sectional view showing a fourth embodiment of the locking structure of the present invention.
  • Figure 11 is a radial cross-sectional view showing a fourth embodiment of the lock structure of the present invention.
  • a bag for taking an object comprising an outer tube, an inner tube, an elastic body and a specimen bag, wherein the inner tube is sleeved in the outer tube and slidable relative thereto; the elastic body comprises a first metal piece and a second metal piece One end of the first and second metal sheets are respectively fixed on the inner tube, and the other end is integrally connected by a separable sleeve to form an annular structure, and the annular structure is disposed at the pocket of the specimen bag. And in the initial state, it is integrated with the inside of the outer tube.
  • the specimen bag When the inner tube is pushed forward, the specimen bag protrudes from the outer tube, and the bag opening is opened as the annular structure is restored, so that the specimen is conveniently placed; when the inner tube is withdrawn backward, the annular structure is due to the outer tube Blocking and disconnecting from the sleeve, re-forming the independent first and second metal sheets, and the elastic body can be separated from the bag mouth, thereby disassembling the inner tube, the outer tube and the specimen bag, and when the disassembly is completed After that, the inner tube and the outer tube can be further taken out from the puncturing device to release the occupation of the surgical channel. After the operation is completed, the specimen bag can be taken out together with the puncturing device.
  • a pull wire is also provided, the wire is fixed at one end to the inner tube, and the other end is connected with the elastic instrument through the specimen.
  • the bag mouth of the bag can be used to tighten the bag mouth of the specimen bag with the inner tube being pulled out.
  • the wire drawing in the prior art is disposed outside the device, which not only affects the appearance, but also easily entangles with other objects during use. Causes damage to the bag.
  • the prior art bag is provided with an indicator on the inner tube or the outer tube, and the visual inspection of the inner tube determines whether the inner tube has reached the designated position, thereby indirectly determining whether the bag mouth has been tightened.
  • the method is neither intuitive nor easy to cause the bag to shrink incompletely, which affects the use effect.
  • the present invention discloses a take-up bag, referring to FIG. 1 and FIG. 2, which includes an outer tube 1, an inner tube 2, an elastic body 3, a specimen bag 4 and a pull wire 5, wherein the sample tape 4 is disposed on
  • the inner end of the inner tube 2 is sleeved in the outer tube 1 and is slidable relative thereto.
  • the inner end of the inner tube 2 is provided with an inner tube handle 21, and the outer end of the outer tube 1 is provided with an outer tube handle 11.
  • the pull wire 5 is concealed. Specifically, the pull wire 5 is disposed inside the inner tube 2, and there is no exposed portion, so that the entanglement damage of the foreign object to the cable can be well avoided, and the specimen can be made.
  • the overall appearance of the bag is more compact and beautiful.
  • the inner tube 2 preferably has a passage 22 extending therethrough in the axial direction, in which the pull wire 5 is mounted for the purpose of concealment.
  • a ball 6 is fixed to one end of the wire 5 which is not connected to the specimen bag, and the size of the ball 6 is smaller than the size of the channel 22 so that it can slide freely in the channel 22 integrally with the wire.
  • the sphere 6 has the following functions: 1. After the specimen bag is separated from the inner tube and the outer tube, the sphere can indicate the position of the wire to facilitate pulling out the specimen bag after the end of the operation; 2. by setting the size of the sphere to make the diameter larger than The through hole of the puncturing device can prevent the pulling wire from falling into the abdominal cavity through the through hole; 3.
  • the ball body can also cooperate with the locking structure described below to control the connection and separation between the pulling wire and the inner tube.
  • the appearance of the sphere can be painted in red or other colors.
  • the take-up bag of the present invention comprises a positioning structure for fixing the inner tube 2 to the current position after the inner tube 2 is pulled backwards relative to the outer tube 1 until the bag mouth is completely tightened, so that the inner tube 2 is not required to pass through the visual inspection.
  • the relative position of the outer tube 1 is used to indirectly determine whether the mouth of the bag is tightened, which greatly facilitates the operation of the medical staff.
  • the positioning structure includes a boss 23 fixed to the outer circumference of the inner tube 2, and an elastic collar 7 fixed to the inner wall of the outer tube 1, convex.
  • the table 23 has a conical shape and gradually becomes smaller in a direction in which the inner tube 2 is drawn backward (i.e., a direction indicated by an arrow in the drawing), and a limit plane 230 is formed at both ends thereof.
  • the elastic collar 7 is provided with a cavity 71 having the same shape as the boss.
  • the inlet of the cavity 71 is smaller than the maximum of the circumference of the boss 23.
  • a stopper 72 is provided at the inlet.
  • the stopper 72 With the movement of the boss 23, the stopper 72 can be elastically deformed under the pressing of the boss 23, so that the boss 23 enters the cavity 71, and can return to the original state after the boss 23 is completely entered, the boss 23
  • the limiting planes 230 are respectively abutted by the inner wall of the cavity, thereby fixing the boss 23 in the cavity 71.
  • the specimen bag is completely tightened by the pulling wire, and the precise positioning is achieved.
  • the invention also includes a locking structure for fixing the cable to the inner tube before the bag mouth is fully tightened, tightening the bag mouth, and releasing the locking of the cable after the inner tube is fixed by the positioning structure, The specimen bag is completely separated from the inner tube.
  • FIG. 4 there is shown a schematic view of a first embodiment of a locking structure, the locking structure being a push-type structure comprising a carriage 81 mounted on the inner tube handle 21, the slider 81 being near the end of the inner tube 2 The end portion is movable in the radial direction of the inner tube 2, and the slider 81 is provided with a container chamber 810 and an upper locking member 811.
  • the container chamber 810 is used for placing the ball body 6.
  • the locking structure further comprises a sliding seat 81.
  • Lower lower locking member 82 wherein
  • the slider 81 In the initial state, the slider 81 is resisted by the lower locking member 82, and the gap between the slider 81 and the passage 22 is smaller than the diameter of the ball 6 to restrain the ball 6 in the container cavity 810, thereby driving the cable to tighten the pocket. .
  • the upper locking member 811 and/or the lower locking member 82 are elastically deformed to move the sliding seat downward until the container chamber 810 is in direct communication with the passage 22 to release the ball 6 into the passage. At this time, the upper locking member 811 and the lower locking member 82 are engaged with each other to fix the sliding seat at the current position, indicating that the ball has been successfully released.
  • the upper locking member 811 includes a pair of hooks disposed at the bottom of the sliding seat, the hook can be elastically deformed, and the lower locking member 82 includes a vertical protruding portion, and the top end of the protruding portion has an enlarged portion 820.
  • the size of the enlarged portion 820 is larger than the gap between the hooks, so that the sliding seat 81 can be received above the lower locking member 82; the contact portion of the enlarged portion 820 and the hook is provided with a slope, and the hook passes through the inclined surface
  • the deformation of the self can be moved downward along the protruding portion and finally engaged under the enlarged portion 820 to complete the locking of the sliding seat.
  • FIG. 6 there is shown a schematic view of a second embodiment of the locking structure, the locking structure being a sliding structure comprising a carriage 83 mounted on the inner tube handle 21 and a retaining member 84 along which the carriage can be
  • the axial movement of the inner tube (not shown) the holding members 83 are disposed in pairs, and abut against the inner wall of the handle 21 by the elastic members, so that elastic movement in the radial direction of the inner tube can occur.
  • the retaining member 21 is provided with a sloped surface to form a tapered sliding groove between the two holding members, and the sliding groove gradually becomes larger in the direction in which the inner tube is drawn outward (ie, the direction indicated by the arrow in the figure), and the sliding portion is gradually enlarged.
  • the seat 83 is provided with a tapered guide block 830 adapted to the tapered chute, wherein
  • the smallest end of the tapered chute is smaller than the diameter of the ball to confine the ball 6 within the chute.
  • the tapered guide block projects into the tapered chute during the movement, forcing the retaining member to expand in the radial direction of the inner tube, thereby releasing the ball into the passage.
  • FIG. 8 and 9 there is shown a schematic view of a third embodiment of the locking structure, the locking structure being a sliding structure comprising a carriage 85 mounted on the inner tube handle 21, the carriage 85 being along the inner tube (not The axial movement is shown with a stop 850 thereon.
  • a stepped sliding groove 86 is disposed under the sliding seat 85.
  • the sliding groove includes at least a first step 860 and a second step 861.
  • the distance between the blocking block 850 and the first step 860 is smaller than the diameter of the ball, and the second step.
  • the distance between 861 is greater than the diameter of the sphere 6, wherein
  • the carriage 85 In the initial state, the carriage 85 is located above the first step, thereby fixing the ball 6 in the space formed by the carriage 85, the stopper 850, and the first step 860.
  • the ball By pushing the slide 85 to move integrally with the ball to the second step, at this time, since the gap between the ball stop 850 and the chute 86 is larger than the diameter of the ball 6, the ball can enter the passage by the second step 861. .
  • an end of the first step 860 adjacent to the second step 861 is provided with an arc-shaped protrusion for further fixing the sphere.
  • FIG. 10 and FIG. 11 a schematic view of the fourth embodiment of the locking structure is shown, and the locking structure is automatic.
  • the structure comprises a sliding seat 87 mounted on the inner tube handle 21.
  • the sliding seat 81 is movable along the axial direction of the inner tube 2, and a stopper 870 is disposed thereon, and a sliding step is arranged under the sliding seat 87.
  • the slot includes at least a first step 880 and a second step 881, and an end of the first step 880 adjacent to the second step 881 is provided with a protrusion 882, and a distance between the block 870 and the protrusion 882 is smaller than a diameter of the ball 6.
  • the distance from the second step 881 is greater than the diameter of the sphere, wherein
  • the carriage In the initial state, the carriage is positioned above the first step 880 to secure the ball 6 in the space formed by the carriage 87, the stop 870, the first step 880 and the protrusion 882.
  • the critical value is the external force value required for the ball to pass through the protrusion 882.
  • the external force exerted by the inner tube on the ball 6 by the wire is not enough to make it pass over the protrusion; when the bag mouth is fully tightened, the external force applied to the ball 6 is continuously increased until it is greater than the critical value.
  • the ball 6 falls onto the second step 881 and drives the slider 87 to move in the axial direction.
  • the slider 87 is provided with an indicator 871.
  • the corresponding position of the inner tube handle is provided with an indication mark 89.
  • the indicator 871 can cooperate with the indicator mark 89 during the movement of the slide to indicate the state of the sphere.
  • the indication mark 89 is "ON” and “OFF” which are disposed along the axial direction, and when the carriage is moved along the axis by the sphere, the indicator 871 is moved from “ON” to "OFF", and the sphere is displayed. Has been released, so that users can intuitively understand the state of the sphere.

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Abstract

一种可拆解的微创手术取物袋包括一拉线(5)，拉线(5)穿设在内管(2)内，可在弹性体(3)与标本袋(4)分离后，随内管(2)的运动而收紧标本袋(4)的袋口，并在袋口完全收紧后与内管(2)分离；定位结构，用于在袋口完全收紧后，将内管(2)固定在当前位置；以及锁止结构，其可在袋口完全收紧之前将拉线(5)固接在内管(2)上，并可在袋口完全收紧后解除对拉线(5)的锁止。通过对内管(2)进行精确定位，保证标本袋(4)在完全锁紧后才与内管(2)分离；设置有锁止结构，仅需一步操作，甚至无需操作便能完成拉线(5)从锁止状态到分离状态之间的切换，使用十分方便；能够对拉线(5)进行有效的保护，使标本袋(4)整体更加简洁、美观。

Description

一种可拆解的微创手术取物袋
技术领域
本发明涉及医疗器械领域，特别是涉及一种取物袋。
背景技术
标本取物袋作为一种医疗辅助设施，可以通过与穿刺器的配合将活体标本从体内取出，经过技术的完善，现已广泛应用于各种腹腔手术中。常用的取物袋包括弹性体、标本袋、外管以及内管，弹性体安装在内管上，绕标本袋的袋口设置，并与标本袋一体的收缩在外管内，使用时先推动内管使标本袋从外管中伸出，袋口在弹性体的作用下撑开，放入标本后，拉动内管将弹性体回收入外管，而袋口被外管阻挡产生相对弹性体的位移，从而达到收紧标本袋的目的，然后，因为标本袋的尺寸大于穿刺器通道的尺寸，其在从外管中伸出后便无法与穿刺器分离，只能在手术结束后与穿刺器一起拔出，即穿刺器将额外占据一条手术通道，而其他手术器械的出入又需要畅通的手术通道，这就意味着不得不在患者腹部插入多个穿刺器，既增加了医护人员的操作，又增加了患者的痛苦。
为了解决这个问题，人们发明了一种取物袋，其标本袋与内管之间可以分开，具体的，是设置有一拉线，拉线的一端与内管连接，另一端与弹性体一起绕标本袋的袋口设置。当标本已经放置在标本袋中后，拉动内管使弹性体与标本袋分离，并通过拉线收紧袋口，当袋口收紧后，将拉线与内管分离，便可以使内管与套管从穿刺器中抽出，从而解除对手术通道的占用，手术结束后将拉线与穿刺器一起抽出，完成标本袋的取出操作，然后这种取物袋存在一些问题：
1、拉线设置在外管的外侧，既影响美观，在使用过程中也容易与别的物体发生缠绕，从而导致取物袋的损坏；
2、因为标本袋自身存在弹性，因为在袋口完全收紧之前拉线都必须保持绷紧状态，否则袋口会再次张开，而收紧后又必须与内管分离，才能达到内管与标本袋分离的目的，现有技术的取物袋在内管或外管之上设置标识，通过医护人员的目测判断内管是否已经达到指定位置，从而间接的判断袋口是否已经收紧，这种方式既不直观，又容易导致袋口收缩不完全，影响使用效果；
3、现有技术的拉线一般都是缠绕或者固接在内管上，在分离时或者需要手动解开，或者需要破坏式的分离，使用很不方便。
发明内容
为了克服现有技术的不足，本发明提供一种可拆解的微创手术取物袋，可以对内管进行精确定位，保证标本袋在完全锁紧后才与内管分离；设置有锁止结构，仅需一步操作，甚至无需操作便能完成拉线从锁止状态到分离状态之间的切换，使用十分方便；能够对拉线进行有效的保护，使标本袋整体更加简洁、美观。
本发明解决其技术问题所采用的技术方案是：
一种可拆解的微创手术取物袋，包括外管、内管、弹性体与标本袋，内管套设于外管内并可相对其滑动；标本袋可随内管的向前推动而自外管中伸出，并被弹性体撑开，弹性体可随内管的向后抽出而与标本袋分离，实现标本袋与内管、外管的拆解，包括
一拉线，拉线穿设在内管内，可在弹性体与标本袋分离后，随内管的运动而收紧标本袋的袋口，并在袋口完全收紧后与内管分离；
定位结构，用于在袋口完全收紧后，将内管固定在当前位置；
以及锁止结构，其可在袋口完全收紧之前将拉线固接在内管上，并可在袋口完全收紧后解除对拉线的锁止。
作为上述方案的进一步改进方式，定位结构包括一固定在内管外周的凸台，和一固定在外管内壁的弹性套环，凸台为圆锥形，沿内管向后抽出的方向逐渐变小，凸台的两端形成限位平面，弹性套环内设有一与凸台形状相同的腔体，腔体的入口小于凸台圆周的最大处；
入口可在凸台的挤压下发生弹性变形，从而使凸台进入腔体内，并可在凸台完全进入后回复原状，通过腔体内壁抵持限位平面，以将凸台固定在该腔体内。
作为上述方案的进一步改进方式，拉线未连接标本袋的一端设有一球体，拉线可通过该球体被锁止结构固定在内管上。
作为上述方案的进一步改进方式，内管包括沿轴向将其贯通的通道，通道的横截面为圆形，其截面直径大于球体的直径，以便于球体通过，拉线与球体穿设在通道内。
作为上述方案的进一步改进方式，锁止结构包括安装在内管上的滑座，其可沿内管的径向运动，滑座上设有容物腔和上锁止件，容物腔用于放置球体，锁止结构还包括设于滑座下方的下锁止件，其中
在初始状态时，滑座被下锁止件抵持，其与通道之间的间隙小于球体的直径，以将球体限制在容物腔内；
通过向滑座施加外力，迫使上锁止件和/或下锁止件发生弹性变形，以使滑座向下运动，直至容物腔与通道直接连通后释放球体，此时上锁止件与下锁止件相互扣合，将滑座固定在当前位置。
作为上述方案的进一步改进方式，上锁止件包括成对设置在滑座底部的卡勾，卡勾可发生弹性变形，下锁止件包括竖直的伸出部，伸出部具有一膨大部，膨大部的尺寸大于卡勾之间的间隙，从而将滑座承接在下锁止件的上方；膨大部与卡勾的接触部位设有斜面，卡勾通过该斜面与自身的变形，可沿伸出部移动，并最终卡合在膨大部的下方。
作为上述方案的进一步改进方式，锁止结构包括安装在内管上的滑座与卡持件，滑座可沿内管的轴向运动，卡持件成对设置，可发生沿内管径向的弹性运动，卡持件上设有斜面，从而在两处卡持件之间形成锥形滑槽，滑槽沿内管向外抽出的方向逐渐变大，滑座上设有与锥形滑槽适配的锥形导块，其中
在初始状态时，锥形滑槽的最小端小于球体的直径，以将球体限制在滑槽内；
通过向滑座施加外力，迫使其沿轴向运动，通过锥形导块将卡持件沿径向撑开，从而将球体释放入通道内。
作为上述方案的进一步改进方式，锁止结构包括安装在内管上的滑座，滑座可沿内管的轴向运动，其上设有挡块，滑座下方设有阶梯状的滑槽，滑槽至少包括第一台阶与第二台阶，挡块与第一台阶之间的距离小于球体的直径，与第二台阶之间的距离大于球体的直径，其中
在初始状态时，滑座位于第一台阶的上方，从而将球体限制在由滑座、挡块与第一台阶形成的空间内；
通过向滑座施加外力，迫使其与球体一体的运动至第二台阶处，球体可由第二台阶进入通道内。
作为上述方案的进一步改进方式，锁止结构包括安装在内管上的滑座，滑座可沿内管的轴向运动，其上设有挡块，滑座下方设有阶梯状的滑槽，滑槽至少包括第一台阶与第二台阶，第一台阶接近第二台阶的一端设有突起，挡块与突起之间的距离小于球体的直径，与第二台阶之间的距离大于球体的直径，其中
在初始状态时，滑座位于第一台阶的上方，从而将球体限制在由滑座、挡块、第一台阶与突起形成的空间内；
通过向球体施加外力，当外力小于一临界值时，球体继续卡持在空间内，当外力大于该临界值时，球体落入第二台阶上，并带动滑座沿轴向运动。
作为上述方案的进一步改进方式，滑座上设有指示物，内管的对应位置设有指示标记，所述指示物可在滑座的运动过程中与该指示标记配合，指示球体的位置状态。
本发明的有益效果是：
可以对内管进行精确定位，保证标本袋在完全锁紧后才与内管分离；设置有锁止结构，仅需一步操作，甚至无需操作便能完成拉线从锁止状态到分离状态之间的切换，使用十分方便；能够对拉线进行有效的保护，使标本袋整体更加简洁、美观。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明整体结构的轴测图；
图2是本发明内管与拉线、球体的组合示意图；
图3是本发明定位结构一个实施例的剖视图；
图4是本发明锁止结构第一个实施例的轴向剖视图；
图5是本发明锁止结构第一个实施例的径向剖视图；
图6是本发明锁止结构第二个实施例的轴向剖视图；
图7是本发明锁止结构第二个实施例的径向剖视图；
图8是本发明锁止结构第三个实施例的轴向剖视图；
图9是本发明锁止结构第三个实施例的径向剖视图；
图10是本发明锁止结构第四个实施例的轴向剖视图；
图11是本发明锁止结构第四个实施例的径向剖视图。
具体实施方式
以下将结合实施例和附图对本发明的构思、具体结构及产生的技术效果进行清楚、完整地描述，以充分地理解本发明的目的、方案和效果。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，如无特殊说明，当某一特征被称为“固定”、“连接”在另一个特征，它可以直接固定、连接在另一个特征上，也可以间接地固定、连接在另一个特征上。此外，本发明中所使用的上、下、左、右等描述仅仅是相对于附图中本发明各组成部分的相互位置关系来说的。
此外，除非另有定义，本文所使用的所有的技术和科学术语与本技术领域的技术人员通常理解的含义相同。本文说明书中所使用的术语只是为了描述具体的实施例，而不是为了限制本发明。本文所使用的术语“及/ 或”包括一个或多个相关的所列项目的任意的组合。
现有技术中存在一种取物袋，包括外管、内管、弹性体与标本袋，其中内管套设于外管内并可相对其滑动；弹性体包括第一金属片与第二金属片，第一、第二金属片的一端分别固接在所述内管上，另一端通过一可分离的套管连接为一体，形成环状结构，该环状结构穿设在标本袋的袋口，并在初始状态时与其一体的压缩在外管内部。当向前推动内管时，标本袋自外管中伸出，并随着环状结构的恢复而张开袋口，便于放置标本；当向后抽出内管时，环状结构因外管的阻挡而从套管处断开，重新形成独立的第一、第二金属片，此时弹性体便可以与袋口分离，从而实现内管、外管与标本袋的拆解，当拆解完成后，就能进一步的将内管与外管从穿刺器中取出，解除对手术通道的占用，手术完成后，标本袋可与穿刺器一起取出。
因为环状结构在断开后无法起到收紧袋口的作用，为了解决这一问题，还设置有拉线，所述拉线一端固接在内管上，另一端与弹性体仪器穿设在标本袋的袋口，从而可随内管的抽出而收紧标本袋的袋口，现有技术中的拉线设置在装置外，既影响美观，在使用过程中也容易与别的物体发生缠绕，从而导致取物袋的损坏。
此外，因为标本袋自身存在弹性，因为在袋口完全收紧之前拉线都必须保持绷紧状态，否则袋口会再次张开，而收紧后又必须与内管分离，才能达到内管与标本袋分离的目的，现有技术的取物袋在内管或外管之上设置标识，通过医护人员的目测判断内管是否已经达到指定位置，从而间接的判断袋口是否已经收紧，这种方式既不直观，又容易导致袋口收缩不完全，影响使用效果。
最后，现有技术的拉线一般都是缠绕或者固接在内管上，在分离时或者需要手动解开，或者需要破坏式的分离，使用很不方便。
因此，针对上述问题，本发明公开了一种取物袋，参照图1、图2，其包括外管1、内管2、弹性体3、标本袋4与拉线5，其中标本带4设于内管2的首端，内管2套设于外管1内并可相对其滑动，内管2的尾端设有内管把手21，外管1的尾端设有外管把手11。在本实施例中，拉线5是隐藏式的，具体的，拉线5穿设在内管2的内部，没有外露的部分，从而能够很好的避免外物对拉线的缠绕破坏，还能使标本袋整体显得更加简洁、美观。
内管2优选具有一沿轴向将其贯穿的通道22，拉线5安装在此通道内，以实现隐藏的目的。
进一步优选的，拉线5不与标本袋连接的一端上固接有一球体6，球体6的尺寸小于上述通道22的尺寸，从而使其可与拉线一体的在通道22内自由滑动。球体6具有如下的作用：1、在标本袋与内管、外管分离后，球体可以标示出拉线的位置，便于手术结束后拉出标本袋；2、通过设置球体的尺寸，使其直径大于穿刺器的通孔，可以防止拉线通过该通孔落入腹腔；3、球体还可与下文所述的锁止结构配合，控制拉线、内管之间的连接与分离。
为了增强球体的标识作用，球体的外表可涂敷为红色或其它颜色。
本发明的取物袋包括一定位结构，其用于在内管2相对外管1向后抽出至袋口完全收紧后，将内管2固定在当前位置，这样便无需通过目测内管2与外管1的相对位置来间接判断袋口是否收紧，极大的方便了医护人员的操作。
具体的，参照图2与图3，示出了定位结构一个实施例的示意图，定位结构包括一固定在内管2外周的凸台23，和一固定在外管1内壁的弹性套环7，凸台23为圆锥形，沿内管2向后抽出的方向（即图中箭头所示方向）逐渐变小，其两端形成限位平面230。弹性套环7内设有一与凸台形状相同的腔体71，腔体71的入口小于凸台23圆周的最大处，优选的，是在入口处设有挡块72。
随着凸台23的运动，挡块72可在凸台23的挤压下发生弹性变形，从而使凸台23进入腔体71内，并可在凸台23完全进入后回复原状，凸台23的限位平面230分别被腔体的内壁抵持，从而将凸台23固定在该腔体71内，此时标本袋在拉线的作用下完全收紧，实现了精确定位的目的。
本发明还包括一锁止结构，其可在袋口完全收紧之前将拉线固接在内管上，收紧袋口，并可在内管被定位结构固定后解除对拉线的锁止，将标本袋与内管彻底分离。
参照图4与图5，示出了锁止结构第一实施例的示意图，锁止结构为按压式结构，包括安装在内管把手21上的滑座81，滑座81接近内管2的尾端，其可沿内管2的径向运动，滑座81上设有容物腔810和上锁止件811，容物腔810用于放置球体6，锁止结构还包括设于滑座81下方的下锁止件82，其中
在初始状态时，滑座81被下锁止件82抵持，其与通道22之间的间隙小于球体6的直径，以将球体6限制在容物腔810内，从而带动拉线收紧袋口。
通过按压滑座，迫使上锁止件811和/或下锁止82件发生弹性变形，以使滑座向下运动，直至容物腔810与通道22直接连通，将球体6释放入通道内，此时上锁止件811与下锁止件82相互扣合，将滑座固定在当前位置，表示球体已经成功释放。
优选的，上锁止件811包括成对设置在滑座底部的卡勾，卡勾可发生弹性变形，下锁止件82包括竖直的伸出部，伸出部的顶端具有一膨大部820，膨大部820的尺寸大于卡勾之间的间隙，从而可以将滑座81承接在下锁止件82的上方；膨大部820与卡勾的接触部位设有斜面，所述卡勾通过该斜面与自身的变形，可沿伸出部向下移动，并最终卡合在膨大部820的下方，完成对滑座的锁紧。
参照图6与图7，示出了锁止结构第二实施例的示意图，锁止结构为滑动式结构，包括安装在内管把手21上的滑座83与卡持件84，滑座可沿内管（未示出）的轴向运动，卡持件83成对设置，并通过弹性件与把手21的内壁抵接，从而可发生沿内管径向的弹性运动。卡持件21上设有斜面，从而在两处卡持件之间形成锥形滑槽，所述滑槽沿内管向外抽出的方向（即图中箭头所示方向）逐渐变大，滑座83上设有与锥形滑槽适配的锥形导块830，其中
在初始状态时，锥形滑槽的最小端小于球体的直径，以将球体6限制在滑槽内。
通过推动滑座83，在运动过程中锥形导块伸入锥形滑槽内，迫使卡持件沿内管的径向撑开，从而将球体释放入通道内。
参照图8与图9，示出了锁止结构第三实施例的示意图，锁止结构为滑动式结构，包括安装在内管把手21上的滑座85，滑座85可沿内管（未示出）的轴向运动，其上设有挡块850。滑座85下方设有阶梯状的滑槽86，所述滑槽至少包括第一台阶860与第二台阶861，挡块850与第一台阶860之间的距离小于球体的直径，与第二台阶861之间的距离大于球体6的直径，其中
在初始状态时，滑座85位于第一台阶的上方，从而将球体6固定在由滑座85、挡块850与第一台阶860形成的空间内。
通过推动滑座85，使其与球体一体的运动至第二台阶处，此时因为球体挡块850与滑槽86之间的间隙大于球体6的直径，则球体可由第二台阶861进入通道内。
优选的，第一台阶860上靠近第二台阶861的一端设有圆弧状突起，起到进一步固定球体的目的。
以上三种实施例均需要人工按压或者推动滑座来释放球体，为了进一步简化医护人员的操作，参照图10与图11，示出了锁止结构第四实施例的示意图，锁止结构为自动式结构，包括安装在内管把手21上的滑座87，类似的，滑座81可沿内管2的轴向运动，其上设有挡块870，滑座87下方设有阶梯状的滑槽，所述滑槽至少包括第一台阶880与第二台阶881，第一台阶880接近第二台阶881的一端设有突起882，挡块870与突起882之间的距离小于球体6的直径，与第二台阶881之间的距离大于球体的直径，其中
在初始状态时，滑座位于第一台阶880的上方，从而将球体6固定在由滑座87、挡块870、第一台阶880与突起882形成的空间内。
通过向球体6施加外力，当外力小于一临界值时，球体继续卡持在上述空间内，在本实施例中，临界值为球体为穿越突起882所需要的外力值。在袋口未完全收紧之前，内管通过拉线施加在球体6上的外力不足以使其越过突起；当袋口完全收紧后，施加在球体6上外力不断增大，直到大于该临界值时，球体6落入第二台阶881上，并带动滑座87沿轴向运动。采用本实施例的锁止结构时，可无需设置上述的定位结构，如若设置需对定位结构进行调整，即在球体6被释放后才能固定所述内管。
优选的，滑座87上设有指示物871，内管把手的对应位置设有指示标记89，指示物871可在滑座的运动过程中与该指示标记89配合，指示球体的状态，在本实施例中，指示标记89为沿轴向设置的“ON”与“OFF”，在滑座被球体带动沿轴线运动时，指示物871与随之由“ON”移动至“OFF”，显示球体已经被释放，便于用户直观的了解球体的状态。
以上是对本发明的较佳实施进行了具体说明，但本发明创造并不限于所述实施例，熟悉本领域的技术人员在不违背本发明精神的前提下还可做出种种的等同变形或替换，这些等同的变形或替换均包含在本申请权利要求所限定的范围内。

Claims (10)

  1. 一种可拆解的微创手术取物袋，包括外管、内管、弹性体与标本袋，所述内管套设于所述外管内并可相对其滑动；所述标本袋可随内管的向前推动而自所述外管中伸出，并被所述弹性体撑开，所述弹性体可随所述内管的向后抽出而与所述标本袋分离，实现标本袋与内管、外管的拆解，其特征在于：包括
    一拉线，所述拉线穿设在所述内管内，可在所述弹性体与所述标本袋分离后，随所述内管的运动而收紧标本袋的袋口，并在所述袋口完全收紧后与内管分离；
    定位结构，用于在所述袋口完全收紧后，将内管固定在当前位置；
    以及锁止结构，其可在所述袋口完全收紧之前将所述拉线固接在所述内管上，并可在所述袋口完全收紧后解除对所述拉线的锁止。
  2. 根据权利要求1所述的可拆解的微创手术取物袋，其特征在于：所述定位结构包括一固定在所述内管外周的凸台，和一固定在所述外管内壁的弹性套环，所述凸台为圆锥形，沿内管向后抽出的方向逐渐变小，所述凸台的两端形成限位平面，所述弹性套环内设有一与所述凸台形状相同的腔体，所述腔体的入口小于凸台圆周的最大处；
    所述入口可在所述凸台的挤压下发生弹性变形，从而使所述凸台进入所述腔体内，并可在凸台完全进入后回复原状，通过腔体内壁抵持所述限位平面，以将所述凸台固定在该腔体内。
  3. 根据权利要求1所述的可拆解的微创手术取物袋，其特征在于：所述拉线未连接所述标本袋的一端设有一球体，所述拉线可通过该球体被所述锁止结构固定在内管上。
  4. 根据权利要求2所述的可拆解的微创手术取物袋，其特征在于：所述内管包括沿轴向将其贯通的通道，所述通道的横截面为圆形，其截面直径大于所述球体的直径，以便于所述球体通过，所述拉线与球体穿设在所述通道内。
  5. 根据权利要求4中所述的可拆解的微创手术取物袋，其特征在于：所述锁止结构包括安装在所述内管上的滑座，其可沿所述内管的径向运动，所述滑座上设有容物腔和上锁止件，所述容物腔用于放置所述球体，所述锁止结构还包括设于所述滑座下方的下锁止件，其中
    在初始状态时，所述滑座被所述下锁止件抵持，其与所述通道之间的间隙小于所述球体的直径，以将所述球体限制在容物腔内；
    通过向所述滑座施加外力，迫使所述上锁止件和/或下锁止件发生弹性变形，以使所述滑座向下运动，直至容物腔与通道直接连通，释放所述球体，此时所述上锁止件与下锁止件相互锁止，将滑座固定在当前位置。
  6. 根据权利要求5中所述的可拆解的微创手术取物袋，其特征在于：所述上锁止件包括成对设置在所述滑座底部的卡勾，所述卡勾可发生弹性变形，所述下锁止件包括竖直的伸出部，所述伸出部具有一膨大部，所述膨大部的尺寸大于所述卡勾之间的间隙，从而将滑座承接在下锁止件的上方；所述膨大部与卡勾的接触部位设有斜面，所述卡勾通过该斜面与自身的变形，可沿所述伸出部移动，并最终卡合在所述膨大部的下方。
  7. 根据权利要求4中所述的可拆解的微创手术取物袋，其特征在于：所述锁止结构包括安装在所述内管上的滑座与卡持件，所述滑座可沿所述内管的轴向运动，所述卡持件成对设置，可发生沿内管径向的弹性运动，所述卡持件上设有斜面，从而在两处卡持件之间形成锥形滑槽，所述滑槽沿内管向外抽出的方向逐渐变大，所述滑座上设有与所述锥形滑槽适配的锥形导块，其中
    在初始状态时，锥形滑槽的最小端小于球体的直径，以将所述球体限制在滑槽内；
    通过向所述滑座施加外力，迫使其沿轴向运动，通过锥形导块将卡持件沿径向撑开，从而将球体释放入所述通道内。
  8. 根据权利要求4中所述的可拆解的微创手术取物袋，其特征在于：所述锁止结构包括安装在所述内管上的滑座，所述滑座可沿所述内管的轴向运动，其上设有挡块，所述滑座下方设有阶梯状的滑槽，所述滑槽至少包括第一台阶与第二台阶，所述挡块与第一台阶之间的距离小于球体的直径，与第二台阶之间的距离大于球体的直径，其中
    在初始状态时，滑座位于第一台阶的上方，从而将所述球体限制在由滑座、挡块与第一台阶形成的空间内；
    通过向所述滑座施加外力，迫使其与球体一体的运动至第二台阶处，球体可由第二台阶进入所述通道内。
  9. 根据权利要求4中所述的可拆解的微创手术取物袋，其特征在于：所述锁止结构包括安装在所述内管上的滑座，所述滑座可沿所述内管的轴向运动，其上设有挡块，所述滑座下方设有阶梯状的滑槽，所述滑槽至少包括第一台阶与第二台阶，第一台阶接近所述第二台阶的一端设有突起，所述挡块与突起之间的距离小于球体的直径，与第二台阶之间的距离大于球体的直径，其中
    在初始状态时，滑座位于第一台阶的上方，从而将所述球体限制在由滑座、挡块、第一台阶与突起形成的空间内；
    通过向所述球体施加外力，当外力小于一临界值时，球体继续卡持在上述空间内，当外力大于该临界值时，球体落入第二台阶上，并带动所述滑座沿轴向运动。
  10. 根据权利要求9中所述的可拆解的微创手术取物袋，其特征在于：所述滑座上设有指示物，所述内管的对应位置设有指示标记，所述指示物可在滑座的运动过程中与该指示标记配合，指示所述球体的位置状态。
PCT/CN2015/077362 2015-04-22 2015-04-24 一种可拆解的微创手术取物袋 WO2016169044A1 (zh)

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