CN111685812A

CN111685812A - Medical extractor

Info

Publication number: CN111685812A
Application number: CN202010635359.1A
Authority: CN
Inventors: 潘显兵
Original assignee: Chongqing Chengyi Technology Co ltd
Current assignee: Peoples Hospital of Hebi
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2020-09-22
Anticipated expiration: 2040-07-03
Also published as: CN113331885A; CN111685812B

Abstract

The invention discloses a medical extractor which comprises an extracting bag, a pull wire and a hollow tube, wherein the extracting bag comprises a bag opening capable of being opened and folded and a bag body formed by extending from the bag opening, and the bag opening comprises a surrounding tunnel; the far end of the binding wire penetrates through the tunnel, and the near end of the binding wire penetrates through the sliding joint to form a binding wire ring with the size being approximately the same as that of the bag opening; the taking-out bag and the binding wire are accommodated in the hollow tube in a curling manner; the hollow tube may be transformed from diameter D1 to diameter D2, where D1 > D2.

Description

Medical extractor

Technical Field

The invention relates to a minimally invasive surgical instrument, in particular to a medical extractor.

Background

In minimally invasive surgery (especially in hard-barreled surgery), it is often necessary to remove internal tissues or diseased organs through a small incision in the patient's skin or through a puncture catheter. How to safely and conveniently take out the tissue or the diseased organ in the cavity is always a difficult problem which troubles the minimally invasive surgery. Since the first clinical application of the endoscopic hard surgery, various special taking-out bags for endoscopic surgeries are developed at home and abroad. Although the structure and the manner of use of the removal pouch vary, the general categories can be divided into two categories: first, a single removal bag. US5037379 discloses a single-side opening threaded removal bag which is grasped by a grasper and passed through a puncture catheter or small incision into the patient's body during use. The second category, retrieval devices comprising a retrieval bag, a catheter and a deployment mechanism. US patent inventions US5465731, US patent applications US5480404, US patent applications US6383197 and the like disclose various extraction devices, in which an extraction bag is rolled up and housed inside a catheter, and when in use, the extraction device enters the body of a patient through a puncture cannula, and then a spreader mechanism thereof is pushed to push the rolled extraction bag out of the catheter, and the spreader mechanism spreads the extraction bag, thereby facilitating the loading of tissues or diseased organs cut during surgery.

The use of extraction devices with spreading mechanisms has hitherto been costly due to the high manufacturing costs of extraction devices with spreading mechanisms, and the proportion of extraction devices used in developing or underdeveloped countries has been low. The single taking-out bag is low in manufacturing cost, but when the single taking-out bag is clinically applied, the single taking-out bag is difficult to place into a patient body through a puncture outfit channel, and the single taking-out bag is usually easy to cause secondary pollution before entering the patient body or is damaged by an instrument in the process of passing through the puncture channel to cause accidental rupture. The design and manufacturing cost is low, and the extraction device which is safe to use has larger clinical application value.

Disclosure of Invention

In one aspect of the invention, a medical extractor is provided that includes an extraction bag, a pull wire, and a hollow tube. The bag of taking out contains the sack that can open and draw in and the bag body that forms that extends from the sack, the sack contains the tunnel that encircles. The distal end of the binding wire comprises a sliding joint, the distal end of the binding wire penetrates through the tunnel, and the proximal end of the binding wire penetrates through the sliding joint to form a binding wire ring with the size approximately the same as that of the bag opening. The removal pouch and the binding wire are housed in a hollow tube in a curled manner. The hollow tube may be converted from a diameter of D1 to a diameter of D2, where D1 > D2.

In one embodiment, the hollow tube is heated to shrink from diameter D1 to diameter D2.

In one embodiment, the removal bag is made of a thermoplastic elastomer material, the heat distortion temperature of the removal bag is greater than or equal to 130 ℃, the hollow tube is made of a thermoplastic engineering plastic, and the temperature of the hollow tube which is shrunk by heating is less than or equal to 125 ℃.

In one embodiment, the removal bag is made of thermoplastic elastomer material, and the hardness Hard of the bag body is 80A or less and Hard or 95A or less.

In one embodiment: a portion of the removal bag extends outside of the hollow tube. In a specific embodiment, the length L of the taking-out bag extending to the outside of the hollow tube is less than or equal to 5mm and less than or equal to 10 mm.

In one embodiment, the diameter D1 of the hollow tube and the wall thickness of the hollow tube are designed such that when the hollow tube is converted from D1 to D2, the bag body of the bag exposed outside the hollow tube is held and a pulling force of 5N or less is applied to pull the bag out of the hollow tube. In one embodiment D2 is 10.5mm or less.

In one embodiment, the hollow tube is semi-rigid or flexible and can be bent at will to prevent damage to the mouth of the hollow tube or the puncture channel through which the hollow tube passes during pulling out of the hollow tube in a clinical application for bag removal.

In yet another aspect of the invention, another improved medical extractor is provided, comprising an extraction bag, a pull wire, and a hollow tube. The bag of taking out contains the sack that can open and draw in and the bag body that forms that extends from the sack, the sack contains the tunnel that encircles. The distal end of the binding wire comprises a sliding joint, the distal end of the binding wire penetrates through the tunnel, and the proximal end of the binding wire penetrates through the sliding joint to form a binding wire ring with the size approximately the same as that of the bag opening. The removal pouch and the binding wire are housed in a hollow tube in a curled manner. The hollow tube may be converted from a diameter of D1 to a diameter of D2, where D1 > D2.

In one embodiment, the inner wall of the hollow tube further comprises a uniformly applied grease; the diameter D1 of the hollow tube is large enough to ensure that when the take-out bag and the pull string are coiled and contained in the hollow tube, the grease can not be scraped and taken away by the soft take-out bag and is still uniformly distributed on the inner wall of the hollow tube, so that good lubrication is kept between the take-out bag and the inner wall of the hollow tube.

In yet another aspect of the invention, an improved extractor product package, and methods of making and using the same, are provided. The medical product package comprises the improved extractor and further comprises a sterilization packaging bag, and the extractor is packaged in the sterilization packaging bag and is supplied to clinical application after sterilization.

A method of manufacturing an improved extractor product package, comprising the steps of:

s1, cutting the glassy state raw material with the diameter of D1 into a hollow tube with a proper size;

s2, uniformly coating medical grease (such as medical silicone grease) in the cut hollow tube by using a tool;

s3, the taking-out bag and the pull wire are coiled and contained in the hollow tube;

s4, placing the hollow tube and the storage object thereof in the former step under a heater, heating to the glass transition temperature of the hollow tube, and shrinking the hollow tube into a high-elastic hollow tube with the diameter of D2 to finish the manufacture of a extractor;

s5: putting the extractor into a sterilization packaging bag, and performing heat sealing on the sterilization packaging bag;

and S6, sterilizing the packaged product with ethylene oxide to finish the manufacture of the extractor product bag. A method of using an improved extractor product package, comprising the steps of:

s1, tearing the sterilization packaging bag open, taking out the extractor in an aseptic mode;

s2, inserting one end of the extractor, which comprises the exposed bag body, into the body of the patient through a first puncture outfit channel arranged on the abdominal wall of the patient;

s3, inserting the nondestructive grasping forceps into the patient body through a second puncture channel arranged on the abdominal wall of the patient, grasping the bag body exposed outside the hollow tube by using the nondestructive grasping forceps, and completely pulling the taking-out bag into the patient body.

In one aspect of the invention, a further optimized medical extractor is provided, comprising an extraction bag, a pull wire, and a hollow tube. The bag of taking out contains the sack that can open and draw in and the bag body that forms that extends from the sack, the sack contains the tunnel that encircles. The distal end of the binding wire comprises a sliding joint, the distal end of the binding wire penetrates through the tunnel, and the proximal end of the binding wire penetrates through the sliding joint to form a binding wire ring with the size approximately the same as that of the bag opening. The removal pouch and the binding wire are housed in a hollow tube in a curled manner. The hollow tube includes a plurality of cutouts.

In one version, the plurality of cuts are arranged in generally parallel rows of 2 or more, and cut the main tube wall of the hollow tube to define one or more tear away edges that form a plurality of attachment zones with the main tube wall of the hollow tube. In one version, the hollow tube comprises a thin walled tube made of plastic, semi-rigid or flexible.

In one embodiment, the material, diameter, wall thickness and notch arrangement of the hollow tube ensures that the connection region is stressed sufficiently to enclose the removal pouch without rupturing; and when 5-10N of pulling force is applied to the easy-to-tear edge, the connecting area is broken, and then the hollow pipe is broken along the easy-to-tear edge.

In one version, the hollow tube is converted from a diameter of D1 to D2, wherein D1 > D2, upon heating.

In one scheme, the taking-out bag is made of thermoplastic elastomer material, the heat distortion temperature is more than or equal to 130 ℃, the hollow tube is made of thermoplastic engineering plastic, and the temperature of the heat shrinkage is less than or equal to 125 ℃.

In yet another aspect of the present invention, a further optimized medical extractor product package and method of use thereof is provided, comprising the above optimized extractor, and further comprising a sterile packaging bag, wherein the extractor is packaged in the sterile packaging bag and sterilized with ethylene oxide for clinical use. The using method comprises the following steps:

s2, inserting the grasper extractor into the body of the patient through a first puncture outfit channel arranged on the abdominal wall of the patient by using a first grasper extractor;

s3, a first grasping forceps enters the patient body through the first puncture outfit channel to grasp the hollow tube; inserting a second grasping forceps into the body of the patient through a second puncture channel arranged on the abdominal wall of the patient to clamp the easy-to-tear edge; the two grasping forceps are matched to tear the hollow pipe along the easy-to-tear edge;

s4, the hollow tube and the tearing edge are taken out of the body by a first grasping forceps through the first puncture outfit channel.

In yet another aspect of the invention, a method of manufacturing an optimized extractor product package is provided, comprising the steps of:

s2, punching the hollow tube made in the previous step into a notch; forming a hollow tube comprising a plurality of cuts arranged in 2 rows in a generally parallel arrangement, said plurality of cuts cutting the main tube wall of the hollow tube to define a tear away edge, said tear away edge forming a plurality of attachment zones with the main tube wall of the hollow tube;

s3, the bag and the pull wire are curled and put into a hollow tube;

s4, placing the hollow tube and the storage object thereof in the former step under a heater, heating to the glass transition temperature of the hollow tube, and shrinking the hollow tube into a high-elastic hollow tube with the diameter of D2 to finish the manufacture of the extractor;

s5, putting the extractor 10c into a sterilization packaging bag, and performing heat sealing on the sterilization packaging bag;

and S6, sterilizing the packaged product obtained by the previous step by using ethylene oxide.

In yet another aspect of the invention, a further improved medical extractor is provided, comprising an extraction bag, a pull wire, and a hollow tube. The bag of taking out contains the sack that can open and draw in and the bag body that forms that extends from the sack, the sack contains the tunnel that encircles. The distal end of the binding wire comprises a sliding joint, the distal end of the binding wire penetrates through the tunnel, and the proximal end of the binding wire penetrates through the sliding joint to form a binding wire ring with the size approximately the same as that of the bag opening. The removal pouch and the binding wire are housed in a hollow tube in a curled manner. The hollow tube comprises a plurality of cuts, the hollow tube being transformable from a diameter D1 to a diameter D2, wherein D1 > D2.

In yet another aspect, the plurality of cuts are arranged in generally parallel rows of 2 or more, and cut the main tube wall of the hollow tube to define one or more tear tabs that form a plurality of attachment zones with the main tube wall of the hollow tube.

In yet another aspect, the material, diameter, wall thickness and notch arrangement of the hollow tube ensures that the connection region is stressed sufficiently to wrap the removal pouch without rupturing; and when 5-10N of pulling force is applied to the easy-to-tear edge, the connecting area is broken, and then the hollow pipe is broken along the easy-to-tear edge.

In another scheme, the part of the taking-out bag extends to the outside of the hollow tube, the length L of the taking-out bag extending to the outside of the hollow tube is less than or equal to 10mm and is more than or equal to 5 mm.

In another embodiment, the diameter D1 of the hollow tube and the wall thickness thereof are designed such that, when the hollow tube is converted from D1 to D2, the bag body of the bag exposed outside the hollow tube is held and a pulling force of 5N or less is applied to pull the bag out of the hollow tube.

In yet another aspect, the hollow tube is semi-rigid or flexible and can be bent at will to prevent damage to the mouth of the hollow tube or the puncture channel through which the hollow tube passes during withdrawal of the bag for clinical use.

In yet another aspect of the invention, a further improved medical extractor is provided, comprising an extraction bag, a pull wire, and a hollow tube. The bag of taking out contains the sack that can open and draw in and the bag body that forms that extends from the sack, the sack contains the tunnel that encircles. The distal end of the binding wire comprises a sliding joint, the distal end of the binding wire penetrates through the tunnel, and the proximal end of the binding wire penetrates through the sliding joint to form a binding wire ring with the size approximately the same as that of the bag opening. The removal pouch and the binding wire are housed in a hollow tube in a curled manner. The hollow tube comprises a plurality of cuts which are arranged in 2 or more rows in a substantially parallel manner, the cuts cut the main tube wall of the hollow tube to define one or more easy-tear edges, and a plurality of connecting areas are formed between the easy-tear edges and the main tube wall of the hollow tube.

In one version, the hollow tube may transition from diameter D1 to diameter D2, where D1 > D2. In one embodiment, the hollow tube shrinks from diameter D1 to diameter D2 when heated.

In one version, a portion of the removal bag extends outside of the hollow tube. The far end of the binding wire penetrates out of one end of the hollow tube, the middle section of the binding wire penetrates out of the other end of the hollow tube, the far end of the binding wire crosses a row of cuts to be connected with the middle section of the binding wire at the other end of the hollow tube in a mode of being approximately parallel to the easily torn edge, and a complete tail binding ring is formed. In one embodiment, the size of the tail tie is sized so that the tail tie is secured in the incision.

In yet another aspect of the invention, an improved extractor product package is provided, comprising the aforementioned improved extractor product package. The improved extractor product bag further comprises a sterilization packaging bag, and the extractor is packaged in the sterilization packaging bag and is provided for clinical application after being sterilized by ethylene oxide. The clinical use method comprises the following steps:

s2, inserting one end of the extractor, which comprises the exposed bag body, into the body of the patient through a first puncture outfit channel arranged on the abdominal wall of the patient; the other end of the extractor is exposed outside the puncture outfit;

s3, inserting the nondestructive grasping forceps into the patient body through a second puncture channel arranged on the abdominal wall of the patient, grasping one end of the hollow tube in the patient by the nondestructive grasping forceps, pulling the tail wire-pulling ring outside the patient, and cutting off all connecting areas for preventing the tail wire-pulling ring by the tail wire-pulling ring;

s4: and (3) grabbing the bag body exposed outside the hollow tube by using an undamaged grasper, and completely pulling the bag out into the body of the patient.

Drawings

For a fuller understanding of the nature of the present invention, reference should be made to the following detailed description taken together with the accompanying figures in which:

FIG. 1 is a side schematic view of a retrieval bag 100 and a drawstring 50;

FIG. 2 is an exploded view of the removal bag 100 and the drawstring;

fig. 3 is a schematic view of the large diameter state of the extractor 10;

fig. 4 is a schematic view of a small-diameter state of the extractor 10;

fig. 5 is a schematic view of a small diameter state of the extractor 10 a;

fig. 6 is a diagram of the extractor product package 1;

fig. 7 is a schematic diagram of a method of clinical application of the extractor 10 a;

FIG. 8 is a schematic view of a hollow tube 200 c;

fig. 9 is a schematic view of a hollow tube 200d in a small diameter state;

fig. 10 is a schematic view of a small-diameter state of the extractor 10 d;

fig. 11 is a schematic view of the extractor 10e in a small diameter state.

The same reference numbers will be used throughout the drawings to refer to identical or similar parts or elements.

Detailed Description

Embodiments of the present invention are disclosed herein, however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, the disclosure herein is not to be interpreted as limiting, but merely as a basis for the claims and as a basis for teaching one skilled in the art how to employ the present invention.

Embodiments of the present disclosure will now be described in detail with reference to the drawings, where for convenience, the party proximal to the operator is defined as the proximal end and the party distal from the operator is defined as the distal end.

Fig. 1-4 depict the structural components of extractor 10. The extractor 10 comprises an extraction bag 100 and a pull-cord 50. The removal bag 100 includes a bag opening 101 that can be opened and closed, and a closed bag body 102 that extends from the bag opening 101. The bag mouth 101 contains a tunnel 111 around the mouth. The distal end of the cable 50 includes a sliding knot 51, the distal end of the cable 50 passing through the tunnel 111 and its proximal end 53 passing through the sliding knot 51 forming a cable loop 52 of approximately the same size as the mouth of the bag.

The removal bag 100 is typically made of a thermoplastic elastomer film. There are many thermoplastic elastomer films suitable for making the extraction bag, including but not limited to TPEE (polyester thermoplastic elastomer), TPU (polyurethane thermoplastic elastomer), TPEE (polyamide thermoplastic elastomer), and the like. In clinical applications, the removal bag is usually filled with the diseased tissue and removed through a small incision in the patient's skin. In order to prevent the removal bag from causing additional unnecessary damage to the incision (wound) of the patient, it is generally preferred that the removal bag is made of a softer material. However, the softer the material of the removal bag, the lower its strength, which tends to cause the bag to be crushed and broken when it is removed through the wound. Preferably, the hardness Hard of the material of the bag body of the taking-out bag is 80A or less and Hard or 95A or less. Generally, materials below 80A are not strong enough, while materials above 95A are too stiff and tend to cause unnecessary additional trauma to the wound of the patient.

Referring now to fig. 3, the extractor 10 further comprises a hollow tube 200, the extraction bag 100 and the bundle 50 wire being received in a coiled manner within the hollow tube 200. It will be appreciated by those skilled in the art that the flexible bag and binding string are difficult or inefficient to be neatly wrapped around a small hollow tube because the bag is generally flexible.

In an advantageous design, as shown in fig. 3-4, the hollow tube 200 comprises two states, a large diameter D1 state and a small diameter D2 state. The hollow tube is in the large diameter D1 state before the initial storage of the bag and cable, and the specific value of D1 is large enough to allow easy insertion of the crimped bag 100 and cable 50 into the hollow tube 200. After the bag and the binding thread are confirmed to be stored in order, the hollow tube 200 is changed to a state of small diameter D2, wherein D1 > D2.

In one particular embodiment, the hollow tube 200 has a glassy state with a diameter D1 in which the withdrawal pouch 100 and the bundle 50 of wires are housed in the hollow tube 200 in a crimped manner. The hollow tube 200 is then heated to shrink it into a highly elastic hollow tube 200a having a diameter D2. In a detailed embodiment, the hollow tube 200 is made of medical grade material, such as medical grade LDPE (low density polyethylene), HDPE (high density polyethylene), PVDF (polyperfluoroethylene), FEP (perfluoroethylene propylene copolymer), and the like. The dimensions and wall thickness of the hollow tube 200 may be customized to the dimensions of the removal pouch being wrapped or selected from standard medical tubing that has been commercialized. For example, the model (3/4) of MT3000 from taco, D1 ═ 19.05 and D2 ═ 9.53, can substantially meet the requirements of the present invention. However, the corresponding pipe can be conveniently customized according to actual needs.

There are a number of manufacturing methods for the extractor 10, and one extractor 100 is manufactured generally as follows:

s1, cutting the glass raw material with the diameter D1 into a hollow tube 200 with a proper size;

s2, the bag 100 and the pull wire 50 are curled and put into the hollow tube 200;

s3, the hollow tube 200 and its contents in the previous step are placed under a heater and heated to the glass transition temperature of the hollow tube 200, so that the hollow tube 200a is shrunk into a high elastic state hollow tube 200a with a diameter of D2.

It will be appreciated by those skilled in the art that this method of manufacture can be implemented in high volume manufacturing in a low cost production manner. The hollow tube 200 is readily available in raw material and may be conveniently cut to size. Meanwhile, the removal bag 100 and the pull string 50 can be easily and quickly received in the large-diameter tube, and the large-diameter hollow tube 200 can be converted into the small-diameter hollow tube 200a by heating the large-diameter hollow tube once in a large batch using a heating device such as an oven.

It will be appreciated by those skilled in the art that the heat distortion temperature of the removal bag 100 and pull wire 50 should be higher than the heating temperature for shrinking the hollow tube 200 into the hollow tube 200 a. The taking-out bag is made of thermoplastic elastomer material, the thermal deformation temperature is more than or equal to 130 ℃, the hollow tube is made of thermoplastic engineering plastic, and the temperature of the thermal shrinkage is controlled to be less than or equal to 125 ℃. The pull wire 50 is made of cotton or nylon, and the thermal deformation temperature of the pull wire is far higher than 125 ℃.

Referring now to fig. 6, an extractor product package 1 includes an extractor 10 and a sterilization wrap 800. The extractor 10 is enclosed in the sterilization bag 800 and sterilized for administration to a patient.

The extractor 1 is convenient for clinical application, and the using method comprises the following steps:

s2, inserting one end of the extractor into the body of the patient through a first puncture outfit channel arranged on the abdominal wall of the patient, and exposing the other end outside the puncture outfit;

s3, using the grasping forceps to push the extraction bag from the interior of the hollow tube exposed outside the puncture outfit, so that the extraction bag falls into the body of the patient.

The hollow tube needs to be inserted into the body of a patient through the puncture channel, and the other end of the hollow tube is exposed out of the puncture outfit. The length of the hollow tube should be greater than the length of the puncture instrument. The length of the hollow tube is generally set to be more than or equal to 200mm, and the diameter D2 after shrinkage deformation is less than or equal to the inner diameter of the puncture channel. Usually, D2 is 10.5mm or less. The above extractor encounters discomfort in simulating clinical use: when using the nipper to push out the bag from the hollow tube is inside, because it is too soft to take out the bag, when pushing out the bag from the tip, push out the power and can not transmit to the other end of hollow tube, lead to usually taking out the local compression of bag and piling up, along with impel the deepening, pile up more and more, cause stifled or destroy the case of taking out the bag.

An optimized extractor 10a for hepatobiliary surgery comprises a hollow tube 200, an extraction bag 100, and a pull-string 50. The hollow tube 200 includes two states, a large diameter D1 state and a small diameter D2 state. The hollow tube is in a large diameter D1 state prior to initial storage of the bag and cable, and the specific value of D1 is large enough to allow easy insertion of the crimped bag 100 and cable 50 into the hollow tube 200, with a portion of the bag 100 extending outside the tube 200. The hollow tube 200 is then heated to transition to a small diameter D2 state, where D1 > D2. The removal pouch 100 should not extend beyond the hollow tube 200 too much to interfere with the insertion of the extractor 10a into and through the piercer passageway. But not too little, it cannot be subsequently used for grabbing and pulling. Preferably, the length L of the taking-out bag extending to the outside of the hollow tube is less than or equal to 5mm and less than or equal to 10 mm.

An extractor product package 1a (not shown) includes an extractor 10a and a sterilization wrap 800. The extractor 10a is enclosed in the sterilization bag 800 and is sterilized for administration to a patient. Referring now to fig. 7, the extractor product package 1a is more convenient for clinical use and its method of use includes the steps of:

s2, inserting one end of the extractor 10a, which comprises an exposed bag body, into the body of the patient through a first puncture outfit channel (91) arranged on the abdominal wall of the patient; the other end of the extractor is exposed outside the puncture outfit;

s3, inserting the non-destructive grasper into the body of the patient through a second puncture channel (92) arranged on the abdominal wall of the patient, grasping the bag body exposed outside the hollow tube by using the non-destructive grasper (93), and completely pulling the bag into the body of the patient.

It will be appreciated by those skilled in the art that the extractor product package 1a is in a manner that is diametrically opposed to the way the extractor product package 1 re-releases the extraction bag. Wherein the extractor product bag 1a is pulled out, the soft extraction bag will not be accumulated in the tube, and the extraction bag in the tube is less and less, so the extraction bag is easier to release, and the extraction bag will not be blocked or damaged.

In yet another preferred embodiment, the hollow tube 200 is optimized for dimensional design through multiple experiments. The diameter D1 and the wall thickness of the hollow tube are designed in such a way that after the hollow tube is changed from D1 to D2, the bag body of the taking-out bag exposed outside the hollow tube is clamped, and the pulling force less than or equal to 5N is applied, so that the taking-out bag can be pulled out from the hollow tube. The simulation clinical application research shows that the operation experience is good when the taking-out bag can be pulled out by adopting the pulling force less than or equal to 5N.

In a further preferred embodiment, when the hollow tube has a diameter D1, the inner wall of the hollow tube is coated with medical grease. Since the specific value of D1 is large enough to easily crimp the bag 100 and the pull wire 50 into the hollow tube, the applied grease is not scraped away by the flexible bag, and is distributed relatively uniformly on the inner wall of the hollow tube, i.e., good lubrication is maintained between the bag and the inner wall of the hollow tube. It should be understood by those skilled in the art that if grease is applied to the inner tube with a smaller diameter and then the flexible removal bag is received in, the flexible removal bag is gradually pushed like an injection-molded rubber plug, and the grease is scraped and taken away and accumulated to the innermost small segment. Similarly, it is not preferable to apply grease to the outside of the curled removal bag, because until now, a soft removal bag can only be inserted into a small tube by hand, and after applying grease to the outside of the removal bag, the removal bag is lubricated by hand, and thus it is not easy to apply force. Meanwhile, the hands of the operator are stained with lubricating grease, and the operation of each procedure is completely inconsistent with the clean production specification of taking out the bag at one time. On the premise that the lubrication between the hollow tube 200a and the removal bag 100 is good, the force for pulling out the removal bag from the hollow tube can be smaller, even less than or equal to 1N.

An improved extractor product package 1a containing grease is manufactured by the following steps:

s2, uniformly coating medical grease (such as medical silicone grease) in the cut hollow tube 200 by using a tool;

s3, the taking-out bag 100 and the pull wire 50 are coiled and contained in the hollow tube 200;

s4, placing the hollow tube 200 and the storage object thereof in the former step under a heater, heating to the glass transition temperature of the hollow tube 200, and shrinking the hollow tube into a high-elastic hollow tube 200a with the diameter of D2, thereby completing the manufacture of a extractor;

and S6, sterilizing the packaged product with ethylene oxide to finish the manufacture of the extractor product bag.

In a further preferred embodiment, the material and wall thickness of the hollow tube 200 are designed such that it is semi-rigid or flexible, optionally bendable. As shown in FIG. 7, in clinical application, the first piercer channel (91) is connected to

The position and angle of the second piercing passage (92) is uncertain and therefore the direction through which the bag is pulled out. By using the semi-rigid or flexible hollow tube which can be bent at will, the taking-out bag does not form a corner with the hollow tube in the process of pulling out the taking-out bag, so that the situation that the pulling force is large, and the corner is abraded or punctured is caused. Can prevent the bag from being damaged by the mouth of the hollow tube or the mouth of the puncture channel through which the hollow tube passes in the process of being pulled out of the hollow tube.

Fig. 8 depicts yet another modified extractor 10c for gastrointestinal surgery (not shown). The extractor 10c comprises a hollow tube 200c, an extraction bag 100 and a pull-string 50. The removal bag 100 and the binding thread 50 are housed in the hollow tube 200c in a curled manner. The hollow tube 200c includes a plurality of slits 220. In one embodiment, a plurality of slits 220 cut away a portion of the material from the main tubular wall 210 of the hollow tube to form a tear away edge 240. The 2 rows of generally parallel slits 220 define a tear edge 240. It will be appreciated by those skilled in the art that multiple rows of slits defining multiple tear-off edges may also be used. The tear edges 240 form a plurality of attachment zones 230 with the main tube wall of the hollow tube.

In yet another embodiment, an extractor product package 1c (not shown) includes an extractor 10c and a sterilization wrap 800. The extractor 10c is enclosed in the sterilization bag 800 and is provided to the patient for use after ethylene oxide sterilization. It will be appreciated by those skilled in the art that when ethylene oxide sterilization is used, the ethylene oxide gas does not reach the sealed area and results in incomplete sterilization if the flexible extraction bag is squeezed too tightly, possibly forming a partially completely sealed area, when the extraction bag is crimped in the hollow tube, if the inner diameter of the hollow tube is small. The hollow tube 200c contains a plurality of slits 220 that break the partially complete seal, making sterilization more complete and reliable.

A further improved extractor 10c, the material, diameter, wall thickness and notch arrangement of the hollow tube 200c ensures that the connecting region is stressed enough to wrap the extraction bag without breaking; and when 5-10N of pulling force is applied to the easy-to-tear edge, the connecting area is broken, and then the hollow pipe is broken along the easy-to-tear edge. One skilled in the art should readily appreciate that by trial and error, taking into account the combination of material, tube diameter, wall thickness and dimensions of the joint region defined by the cut-out, it is ensured that the hollow tube will break along the tear-off edge if the joint region breaks when a pulling force of 5 to 10N is applied to the tear-off edge. While the attachment zone is stressed sufficiently to wrap the removal pouch without breaking.

The extractor product bag 1c is convenient for clinical application, and the using method comprises the following steps:

s1, tearing the sterilization packaging bag open, and taking out the extractor 10c in an aseptic mode;

s2, inserting the extractor 10c into the patient body through the first puncture outfit channel arranged on the abdominal wall of the patient by using the first grasping forceps;

s4, taking the hollow tube and the tearing edge out of the body by using a pair of wound nippers through the first puncture outfit channel.

The notched arrangement of the hollow tube 200c provides another convenient way to remove the bag into the patient. Extractor 10c is more suitable for extracting gall bladders when the volume of the extraction bag is small than extractor 10a, such as in laparoscopic hepatobiliary surgery. The solution with extractor 10c is even more advantageous when the volume of the extraction bag is too large, for example for gastrointestinal surgery.

In conjunction with the extractor 10 described above, a further improved extractor 10c is provided. The hollow tube 200c includes two states, a large diameter D1 state and a small diameter D2 state. The hollow tube is in the large diameter D1 state before the initial storage of the bag 100 and the wire 50, and the specific value of D1 is large enough to allow easy insertion of the crimped bag 100 and wire 50 into the hollow tube 200 c. The hollow tube 200 is then heated to transition to a small diameter D2 state, where D1 > D2.

In combination with the foregoing, a method of manufacturing an improved extractor product package 1c is provided, comprising the steps of:

s2, punching the hollow tube made in the previous step into a notch; forming a hollow tube 200c comprising a plurality of cuts arranged in 2 generally parallel rows that cut the main tube wall of the hollow tube to define a tear away edge that forms a plurality of attachment zones with the main tube wall of the hollow tube;

s3, the bag 100 and the pull string 50 are curled and put into the hollow tube 200 c;

s4, placing the hollow tube 200c and its container under a heater, heating to the glass transition temperature of the hollow tube 200c, and shrinking to obtain a high-elasticity hollow tube 200D (shown in FIG. 9) with a diameter of D2, thereby completing the manufacture of the extractor 10 c;

It will be appreciated by those skilled in the art that this method of manufacture can be implemented in high volume manufacturing in a low cost production manner. The raw materials of the hollow tube are easy to obtain, the hollow tube can be conveniently cut to an appropriate size, the notch can be designed into a simple blanking die, and blanking with high efficiency is facilitated. Meanwhile, the removal bag 100 and the pull string 50 can be easily and quickly received in the large-diameter tube, and the large-diameter hollow tube 200 can be converted into the small-diameter hollow tube 200a by heating the large-diameter hollow tube once in a large batch using a heating device such as an oven. It should be particularly noted that when the volume of the extraction bag 100 in the extractor 10c is too large, the extraction bag is housed in the hollow tube, and a partially completely sealed region may be formed under the condition that the flexible extraction bag is squeezed too tightly, and when ethylene oxide sterilization is employed, ethylene oxide gas cannot reach the sealed region, resulting in incomplete sterilization. The hollow tube 200c contains a plurality of slits 220 that break the partially complete seal, making sterilization more complete and reliable.

In conjunction with extractor 10a previously described, a further improved extractor 10d is presented. The extractor 10d comprises a hollow tube 200c, an extraction bag 100 and a pull-string 50. The hollow tube 200c includes two states, a large diameter D1 state and a small diameter D2 state. The hollow tube is in the large diameter D1 state before the initial storage of the bag 100 and the wire 50, and the specific value of D1 is large enough to allow easy insertion of the crimped bag 100 and wire 50 into the hollow tube 200 c. A part of the take-out bag 100 extends to the outside of the hollow tube 200 c. The hollow tube 200c is then heated to transition to a smaller diameter D2 state, where D1 > D2. The removal pouch 100 should not extend too far out of the hollow tube 200c to interfere with the insertion of the extractor 10d into and through the piercer passageway. But not too little, it cannot be subsequently used for grabbing and pulling. Preferably, the length L of the taking-out bag extending to the outside of the hollow tube is less than or equal to 5mm and less than or equal to 10 mm.

An extractor product bag 1d (not shown) includes an extractor 10d and a sterilization wrap 800. The extractor 10d is enclosed in the sterilization bag 800, sterilized with ethylene oxide, and then provided to the patient for use.

Referring now to fig. 7 and 10, the extractor product package 1d is similar to the clinical application method of the product package 1a, and the application method thereof comprises the following steps:

s2, inserting one end of the extractor 10d, which contains the exposed bag body, into the body of the patient through a first puncture outfit channel (91) arranged on the abdominal wall of the patient; the other end of the extractor is exposed outside the puncture outfit;

It will be appreciated by those skilled in the art that when the removal bag volume in the extractor 10d is large, the material, tube diameter, wall thickness and notch arrangement of the hollow tube 200c ensures that the connection region is stressed sufficiently to wrap the removal bag without breaking; and when 5-10N of pulling force is applied to the easy-to-tear edge, the connecting area is broken, and then the hollow pipe is broken along the easy-to-tear edge. It will be appreciated by those skilled in the art, particularly those familiar with mechanics, that pulling the extraction bag 100 against the walls of the hollow tube 200c produces a relatively small pulling force which produces a relatively large localized stress, while the hollow tube 200c is made of a plastic material and is slit-sensitive at the slit, so that when the extraction bag in the extractor 10d is pulled out, the tear-off edge will automatically break if the force is relatively large, thereby reducing the pull-out force.

Similarly, when the volume of the extraction bag 100 in the extractor 10d is too large, the extraction bag is accommodated in the hollow tube, and a partially completely sealed region may be formed under the condition that the flexible extraction bag is pressed too tightly, and when ethylene oxide sterilization is used, ethylene oxide gas cannot reach the sealed region, resulting in incomplete sterilization. The hollow tube 200c contains a plurality of slits 220 that break the partially complete seal, making sterilization more complete and reliable.

Referring now to fig. 11, in conjunction with the previously described extractor 10d, a further improved extractor 10e is presented. The extractor 10e and the extractor 10d have substantially the same structure and composition, and are different only in the way of accommodating the wires. The extractor 10e comprises a hollow tube 200c, an extraction bag 100 and a pull-string 50. The hollow tube 200c includes two states, a large diameter D1 state and a small diameter D2 state. The hollow tube is in the large diameter D1 state before the initial storage of the bag 100 and the wire 50, and the specific value of D1 is large enough to allow easy insertion of the crimped bag 100 and wire 50 into the hollow tube 200 c. A part of the take-out bag 100 extends to the outside of the hollow tube 200 c. The distal end 53 of the binding wire 50 is threaded out of one end of the hollow tube 200c, the middle section of the binding wire 50 is threaded out of the other end of the hollow tube 200c, and the distal end 53 of the binding wire spans a row of cuts to connect the middle section of the binding wire at the other end of the hollow tube 200c in a manner of being substantially parallel to the easily torn edge, thereby forming a complete tail binding ring 55. The tail tie 55 is of a reasonable size so that it is fixed in the incision. Finally, the hollow tube 200c is heated and transformed into a state of small diameter D2, wherein D1 > D2.

An extractor product bag 1e (not shown) includes an extractor 10e and a sterilization wrap 800. The extractor 10e is enclosed in the sterilization bag 800, sterilized with ethylene oxide and provided to the patient for use.

The method of use of the extractor product package 1e, which is similar to the method of clinical use of the product package 1d, is now understood in conjunction with fig. 7 and 11. The using method comprises the following steps:

s2, inserting one end of the extractor 10e, which contains the exposed bag body, into the body of the patient through a first puncture outfit channel (91) arranged on the abdominal wall of the patient; the other end of the extractor is exposed outside the puncture outfit;

s3, inserting the non-destructive grasper into the patient through a second puncture channel (92) arranged on the abdominal wall of the patient, grasping one end of the hollow tube inside the patient by using the non-destructive grasper (93), pulling the tail pull wire ring outside the patient, and cutting off all connection areas blocking the tail pull wire ring by the tail pull wire ring;

It will be appreciated by those skilled in the art that the package 1e is more convenient to use than the package 1d by pulling the tail pull wire loop from outside the patient's body to sever the attachment region of the tear-off edge of the hollow tube. The active force application point is positioned outside the body of the patient and can be operated by hands. More convenient control. When the hollow tube is cut open, it becomes easier to pull the bag out of the hollow tube.

The embodiments that have been illustrated include various features and methods of use, methods of manufacture. Those skilled in the art will appreciate that various features, methods of use and methods of manufacture can be superimposed on one another, substituted for, or substituted for, one another in order to create new arrangements.

In conclusion, the taking-out bag and the taking-out bag product package well solve the problems that when a single taking-out bag is clinically applied, the single taking-out bag is difficult to place into a patient body through a puncture outfit channel, the single taking-out bag is generally easy to cause secondary pollution before entering the patient body, or the single taking-out bag is damaged by an instrument in the process of passing through the puncture channel, so that the single taking-out bag is accidentally broken and the like. It should be understood by those skilled in the art that when the extraction bag is successfully introduced into the patient and released out of the hollow tube, the subsequent operation of the extraction bag to receive tissue is well known and will not be described in detail.

Many different embodiments and examples of the invention have been shown and described. One of ordinary skill in the art can adapt the methods and apparatus described herein by making appropriate modifications without departing from the scope of the invention. Several modifications have been mentioned, and other modifications will occur to those skilled in the art. The scope of the invention should, therefore, be determined with reference to the appended claims, and not be construed as limited to the details of structure, materials, or acts shown and described in the specification and drawings.

Claims

1. A medical extractor comprises an extraction bag, a pull wire and a hollow tube, and is characterized in that:

1) the taking-out bag comprises a bag opening capable of being opened and closed and a bag body formed by extending from the bag opening, and the bag opening comprises a surrounding tunnel;

2) the far end of the binding wire penetrates through the tunnel, and the near end of the binding wire penetrates through the sliding joint to form a binding wire ring with the size being approximately the same as that of the bag opening;

3) the taking-out bag and the binding wire are accommodated in the hollow tube in a curling manner;

4) the hollow tube may be transformed from diameter D1 to diameter D2, where D1 > D2.

2. The extractor of claim 1, wherein: the hollow tube shrinks from diameter D1 to diameter D2 after heating.

3. The extractor of claim 2, wherein: the taking-out bag is made of thermoplastic elastomer materials, and the hardness Hard of the bag body is not less than 80A and not more than Hard and not more than 95A.

4. The extractor of claim 4, wherein: a portion of the removal bag extends outside of the hollow tube.

5. The extractor according to claim 4, wherein the diameter D1 of the hollow tube and the wall thickness of the hollow tube are designed such that when the hollow tube is converted from D1 to D2, the bag body of the extraction bag exposed outside the hollow tube is held and the extraction bag is pulled out of the hollow tube by applying a pulling force of 5N or less.

6. The extractor of claim 4, wherein the inner wall of said hollow tube further comprises a uniform coating of grease; the diameter D1 of the hollow tube is large enough to ensure that when the take-out bag and the pull string are coiled and contained in the hollow tube, the grease can not be scraped and taken away by the soft take-out bag and is still uniformly distributed on the inner wall of the hollow tube, so that good lubrication is kept between the take-out bag and the inner wall of the hollow tube.

7. The extractor according to claim 6, wherein said hollow tube is semi-rigid or flexible and is optionally bendable to prevent damage to the mouth of the hollow tube or to the mouth of the puncture channel through which the hollow tube passes during pulling out of the hollow tube in clinical applications of the extraction bag.

8. An extractor product package comprising an extractor according to any of claims 6 to 7, further comprising a sterile packaging, wherein the extractor is packaged in the sterile packaging and sterilized for clinical use.

9. A method of manufacturing the extractor product package of claim 8, comprising the steps of: