CN111685822A - Medical disposable fetching device containing main pull wire - Google Patents
Medical disposable fetching device containing main pull wire Download PDFInfo
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- CN111685822A CN111685822A CN202010654346.9A CN202010654346A CN111685822A CN 111685822 A CN111685822 A CN 111685822A CN 202010654346 A CN202010654346 A CN 202010654346A CN 111685822 A CN111685822 A CN 111685822A
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- 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
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- 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
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- 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
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Abstract
The invention discloses a medical disposable article taking device comprising a main pull line, which comprises an article taking bag, wherein the article taking 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 body comprises a first bag surface and a second bag surface; the bag opening comprises a surrounding bag opening tunnel; the method is characterized in that: the outer surface of the first bag surface and the outer surface of the second bag surface of the bag body comprise a first bag surface tunnel, the first bag surface tunnel is formed by welding an additional film on the first bag surface and the second bag surface, the bag further comprises a main pull line, and the main pull line comprises a first twist knot close to the far end of the main pull line and a second twist knot close to the near end of the main pull line; the near end of the main stay wire penetrates through the bag opening tunnel and then penetrates through the second twist knot, and the far end of the main stay wire penetrates through the first bag surface tunnel and then penetrates through the first twist knot.
Description
Technical Field
The invention relates to a minimally invasive surgical instrument, in particular to a medical disposable object extractor comprising a main pull wire.
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 object obtaining bags for endoscopic surgeries are developed at home and abroad. Although the structure and the use of the bag are different, the general classification can be divided into two categories: the first category, single access bags. The invention of US5037379 discloses a single-side opening laced bag, which is used by grasping the bag with a grasper and passing through a puncture catheter or a small incision into the body of a patient. The second type is an article taking device comprising an article taking bag, a conduit and a stretching mechanism. US patent inventions US5465731, US patent No. US 5465404, US patent No. US6383197 disclose various get-out appliances, its get-out thing bag is rolled up and is taken and accomodate in the pipe, get-out appliance enter patient's body through puncture cannula while using, push its strut mechanism and push out the get-out thing bag that rolls up outside the pipe again, and strut the thing bag by strut mechanism, conveniently pack into the.
So far, in the process of taking out the fetching bag and the tissues or diseased organs contained in the fetching bag through a small incision, the tissues or diseased organs are generally pushed and stacked together in the fetching bag to form a big bulging structure between two tips, which causes difficulty in passing through the small incision, and the fetching bag is broken or causes additional injury to a wound of a patient.
Disclosure of Invention
In one aspect of the invention, a medical disposable fetching device comprising a main pull line comprises a fetching bag, wherein the fetching 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 body comprises a first bag surface and a second bag surface; the bag opening comprises a surrounding bag opening tunnel; the method is characterized in that: the outer surface of the first bag surface and the outer surface of the second bag surface of the bag body comprise a first bag surface tunnel, the first bag surface tunnel is formed by welding an additional film on the first bag surface and the second bag surface, the bag further comprises a main pull line, and the main pull line comprises a first twist knot close to the far end of the main pull line and a second twist knot close to the near end of the main pull line; the near end of the main stay wire penetrates through the bag opening tunnel and then penetrates through the second twist knot, and the far end of the main stay wire penetrates through the first bag surface tunnel and then penetrates through the first twist knot.
In one embodiment, the first bag surface tunnel is formed by welding an additional film to the first bag surface and the second bag surface.
In another embodiment, the first binding thread is inserted into the first pocket tunnel, and the first end and the second end of the first binding thread are exposed outside the first pocket tunnel. The first end and the second end that use chamber mirror knot tying pincers and nipper to stimulate the ligature respectively can draw in the middle part of the bag body and make the bag body form and be similar to calabash shape, tie a knot each other with the first end and the second end of first ligature to prevent to get thing bag and pull out external in-process formation middle bloated big structure through the wound. The thin neck of the 'gourd' can be adjusted by adjusting the tightness of the tension of the first end and the second end of the first binding wire according to the requirement.
In yet another aspect of the invention, an improved medical extractor includes a bag. The bag body comprises a first bag surface and a second bag surface; the bag opening comprises a surrounding bag opening tunnel; the bag further comprises a main pull wire, wherein the far end of the main pull wire comprises a sliding joint, the far end of the main pull wire penetrates through the bag opening tunnel, and the near end of the main pull wire penetrates through the sliding joint to form a pull wire ring with the size approximately the same as that of the bag opening. In one scheme, the first bag surface and the second bag surface of the bag body are externally provided with a first bag surface tunnel, and the first bag surface tunnel is formed by welding additional films on the first bag surface and the second bag surface.
In another embodiment, the outer surface of the first pocket side comprises first pocket side tunnels and the outer surface of the second pocket side does not comprise pocket side tunnels.
In another embodiment, the outer surface of the first pocket surface does not include a pocket surface tunnel and the outer surface of the second pocket surface includes a first pocket surface tunnel.
In another scheme, the first end of the first binding line comprises a preset first twist knot, and the second end of the first binding line passes through the first twist knot after passing through the first bag-face tunnel.
In another scheme, the first end of the first binding line comprises a preset first twist knot, and the second end of the first binding line passes through the first twist knot after being wound in the first bag surface tunnel for N circles (N is more than or equal to 2).
In another scheme, the middle of the bag body can be folded by pulling the second end of the first binding line and pushing the first twist knot to form an approximate gourd-shaped bag body, and the second end of the first binding line is used for forming a knot at the first twist knot to prevent the fetching bag from forming a middle swelling structure in the process of being pulled out of the body through the wound.
In another scheme, the middle of the bag body can be folded by pulling the second end of the first binding line and pushing the first twist knot to enable the bag body to be approximately gourd-shaped, and the first end and the second end of the binding line are respectively pulled to be knotted with each other by using the endoscope knotting forceps and the grasping forceps, so that a middle swelling structure is prevented from being formed in the process that the object taking bag is pulled out of the body through the wound.
In another scheme, the fetching device also comprises a catheter component, a handle component penetrating through the catheter component and an opening mechanism which is connected with the handle component and can open the fetching bag; the opening mechanism is accommodated in the bag opening tunnel, and the bag is curled or folded on the outer surface of the opening mechanism and is accommodated in the catheter assembly together.
In another aspect of the present invention, an improved method for using a medical extractor is provided, comprising the steps of:
s1, inserting the fetching device into the patient body through the puncture cannula and extending to the target area;
s2, pushing the object-taking bag out by operating the handle assembly, and automatically restoring the elastic body to open the object-taking bag;
s3, cutting the lesion tissue or organ, cutting off and dropping into an extraction bag;
s4, taking out the opening mechanism, and drawing the main pull line to fold the bag mouth of the object-taking bag;
s5: the endoscope knotting forceps and the grasping forceps enter the body of the patient through the puncture channel, the second end of the first binding line is pulled and the first twist knot is pushed to fold the middle of the object taking bag body to form a gourd-shaped or funnel-shaped bag body, and the knotting forceps are used for enabling the second end of the second binding line to form a knot at the first twist knot;
s6, the bag and the tissue are pulled out through the wound of the patient.
In another aspect of the present invention, a method for manufacturing an improved fetching bag and a binding wire of a medical fetching device is provided, comprising the following steps:
s1, cutting the qualified raw material film to form the fabric of the bag;
s2, rolling one side of the fabric, and welding to form a bag opening tunnel;
s3, cutting the raw material film into strip films;
s4, placing the raw material film at a proper position of the fabric of the fetching bag, and welding to form a first bag surface tunnel;
s5: the material of the previous step is folded towards the reverse side of the first bag surface tunnel and welded to form a bag body;
s6, prefabricating a sliding joint at the far end of the main stay wire, wherein the far end of the main stay wire penetrates through the bag opening tunnel, and the near end of the main stay wire penetrates through the sliding joint to form a stay wire ring with the size approximately equal to that of the bag opening;
and S7, enabling the first end of the first binding line to comprise a preset first twist knot, and enabling the second end of the first binding line to pass through the first twist knot after passing through the first bag surface tunnel.
In yet another aspect of the invention, an optimized extractor for minimally invasive surgery is provided comprising an access bag. The bag body comprises a first bag surface and a second bag surface; the bag mouth contains the sack tunnel that encircles.
In one scheme, the first bag surface and the second bag surface of the bag body are externally provided with a first bag surface tunnel, and the first bag surface tunnel is formed by welding additional films on the first bag surface and the second bag surface.
In another embodiment, the outer surface of the first pocket side comprises first pocket side tunnels and the outer surface of the second pocket side does not comprise pocket side tunnels.
In another embodiment, the outer surface of the first pocket surface does not include a pocket surface tunnel and the outer surface of the second pocket surface includes a first pocket surface tunnel.
In another scheme, the object taking device further comprises a main pull line, wherein the main pull line comprises a first twist knot close to the far end of the main pull line and a second twist knot close to the near end of the main pull line; the near end of the main stay wire penetrates through the bag opening tunnel and then penetrates through the second twist knot, and the far end of the main stay wire penetrates through the first bag surface tunnel and then penetrates through the first twist knot.
In another scheme, the far end of the main pull wire is wound in the first bag surface tunnel by N circles (N is more than or equal to 2), and then passes through the first twist knot.
In another scheme, the distance between the first twist knot and the second twist knot is approximately equal to the distance from the mouth of the first bag-face tunnel to the mouth of the bag-mouth tunnel.
In another scheme, the bag opening can be closed by pulling the near end of the main pull line and pushing the second twist knot.
In another scheme, the far end of the main pull line is pulled and the first twist knot is pushed to fold the middle part of the bag body to form an approximate gourd shape, and the main pull line at the far end forms a knot at the first twist knot to prevent the fetching bag from forming a middle swelling structure in the process of pulling the fetching bag out of the body through the wound.
In another scheme, the fetching device further comprises a catheter component, a handle component penetrating through the catheter component and an opening mechanism which is connected with the handle component and can open the fetching bag; the opening mechanism is accommodated in the bag opening tunnel, and the bag is curled or folded on the outer surface of the opening mechanism and is accommodated in the catheter assembly together.
In another aspect of the present invention, a method for using an optimized extractor for minimally invasive surgery is provided, which comprises the following steps:
s1, inserting the fetching device into the patient body through the puncture cannula and extending to the target area;
s2, pushing the object-taking bag out by operating the handle assembly, and automatically restoring the elastic body to open the object-taking bag;
s3, cutting the lesion tissue or organ, cutting off and dropping into an extraction bag;
s4, taking out the opening mechanism, pulling the main pull wire and pushing the second twist knot by the duct component to fold the mouth of the object-taking bag, and taking out the duct component;
s5: the endoscope knotting forceps and the grasping forceps enter a patient body through a puncture channel, the far end of the main pull wire is pulled, the first twisted knot is pushed, the middle of the object taking bag body is folded, a gourd-shaped bag body is formed, and the knotting forceps are used for enabling the far end main pull wire to form a knot at the first twisted knot;
s6, the bag and the tissue are pulled out through the wound of the patient.
In another aspect of the present invention, a method for manufacturing an optimized extraction bag and a binding wire of an extractor for minimally invasive surgery is provided, comprising the following steps:
s1, cutting the qualified raw material film to form the fabric of the bag;
s2, rolling one side of the fabric, and welding to form a bag opening tunnel;
s3, cutting the raw material film into strip films;
s4, placing the raw material film at a proper position of the fabric of the fetching bag, and welding to form a first bag surface tunnel;
s5: the material of the previous step is folded towards the reverse side of the first bag surface tunnel and welded to form a bag body;
s6, prefabricating a first twist knot and a second twist knot by using the main stay wire;
and S7, the near end of the main pull wire passes through the bag opening tunnel and then passes through the second twist knot, and the far end of the main pull wire passes through the first bag opening tunnel and then passes through the first twist knot.
In yet another aspect of the present invention, an improved medical extractor includes a bag. The bag body comprises a first bag surface and a second bag surface; the bag mouth contains the sack tunnel that encircles. In one embodiment, the outer surface of the first bag surface and/or the second bag surface of the bag body comprises a first bag surface tunnel, and the first bag surface tunnel is formed by welding an additional thin film on the first bag surface and the second bag surface.
In one arrangement, the first pocket-face tunnel is formed by a plurality of spaced short tunnels.
In one arrangement, the plurality of spaced short tunnels are aligned in a substantially parallel relationship with the central axes of the short tunnels being substantially aligned.
In another scheme, the object taking device further comprises a main pull line, wherein the main pull line comprises a first twist knot close to the far end of the main pull line and a second twist knot close to the near end of the main pull line; the near end of the main stay wire penetrates through the bag opening tunnel and then penetrates through the second twist knot, and the far end of the main stay wire penetrates through the first bag surface tunnel and then penetrates through the first twist knot.
In another scheme, the far end of the main pull wire is wound in the first bag surface tunnel by N circles (N is more than or equal to 2), and then passes through the first twist knot.
In another scheme, the distance between the first twist knot and the second twist knot is approximately equal to the distance from the mouth of the first bag-face tunnel to the mouth of the bag-mouth tunnel.
In another scheme, the bag opening can be closed by pulling the near end of the main pull line and pushing the second twist knot.
In another scheme, the far end of the main pull line is pulled and the first twist knot is pushed to fold the middle part of the bag body to form an approximate gourd shape, and the main pull line at the far end forms a knot at the first twist knot to prevent the fetching bag from forming a middle swelling structure in the process of pulling the fetching bag out of the body through the wound.
In another scheme, the fetching device further comprises a catheter component, a handle component penetrating through the catheter component and an opening mechanism which is connected with the handle component and can open the fetching bag; the opening mechanism is accommodated in the bag opening tunnel, and the object fetching bag is curled or folded on the outer surface of the opening mechanism and is accommodated in the catheter component together
In another aspect of the present invention, a method for manufacturing an improved medical extractor bag and a binding wire is provided, which comprises the following steps:
s1, cutting the qualified raw material film to form the fabric of the bag;
s2, rolling one side of the fabric, and welding to form a bag opening tunnel;
s3, cutting the raw material film into strip films;
s4, placing the raw material film at a proper position of the fabric of the fetching bag, and welding at one time by using a proper mould to form a plurality of short tunnels at intervals;
s5: the material of the previous step is folded towards the reverse side of the first bag surface tunnel and welded to form a bag body;
s6: trimming and removing the unwelded long film between the short tunnels;
s7, prefabricating a first twist knot and a second twist knot by using the main stay wire;
and S8, the near end of the main pull wire passes through the bag opening tunnel and then passes through the second twist knot, and the far end of the main pull wire passes through the first bag opening tunnel and then passes through the first twist knot.
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 perspective view of a first embodiment extractor instrument of the present invention in a retracted state;
FIG. 2 is a perspective view of the extractor instrument of FIG. 1 in a deployed state;
FIG. 3 is an exploded view of the extractor instrument of FIG. 2;
FIG. 4 is a simulated view of the pouch opening closure of the extraction instrument of FIG. 2 in use;
fig. 5 is a side projection view of the bag 200 and the first binding 240 of the extractor 10 a;
figure 6 is a schematic view of a tunnel weld of the access bag 200;
fig. 7 is a simulated schematic view of the bag after being fastened by a first fastening line (main pull line) at the first bag face tunnel;
fig. 8 is a side projection view of the bag 200 and the first binding 240 of the extractor 10 b;
FIG. 9 is an enlarged view of 9-9 of FIG. 8;
FIG. 10 is a schematic knotting diagram of a typical twist knot;
fig. 11 is a side projection view of the fetching bag 200 and the first binding wire 240 of the fetching device 10 c;
fig. 12 is a side projection view of the fetching bag 200 and the first binding 240 of the fetching device 10 d;
FIG. 13 is a schematic knotted view of the main pulling wire 50a shown in FIG. 12;
fig. 14 is a side projection view of the object-taking bag 200a and the first binding 240 of the extractor 10 e.
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. 1-3 depict in detail the structural components of an extractor instrument 10. Briefly, the retrieval device 10 includes, in order from the distal end to the proximal end, a retrieval bag 100, a deployment mechanism 20, a catheter assembly 30, a handle assembly 40, and a main pull wire 50. The catheter assembly 30 includes a hollow catheter 33 and a catheter handle portion 31 and 32 fixedly coupled thereto. The handle assembly 40 includes a finger ring 42 and a hollow drive rod 41 connected in series from a proximal end to a distal end, the drive rod 41 being positioned within the hollow catheter 33 and being axially movable relative to the hollow catheter 33 to move the deployment mechanism 20 and the retrieval bag 100 between a retracted state (fig. 1) and an extended state (fig. 2). The distraction mechanism 20 comprises an elastomeric body 21, said elastomeric body 21 comprising two substantially flexible or elastic bands 23 and 24, a proximal end of said elastomeric body 21 being secured to a distal end of a handle assembly 40.
The pouch 100 includes a mouth 120 that can be opened and closed, and an enclosed pocket 130 extending from the mouth 120. The pocket 120 includes a pocket tunnel 122 surrounding the pocket, the pocket tunnel 122 being configured to receive the opening mechanism 20 and the primary pull wire 50. The pouch 100 is typically made of a thermoplastic elastomer film welded. There are many thermoplastic elastomer films suitable for making bags including, but not limited to, TPEE (polyester thermoplastic elastomer), TPU (polyurethane thermoplastic elastomer), TPEE (polyamide thermoplastic elastomer), and the like. When the bag is used clinically, the pathological tissue is usually contained and taken out through a small incision on the skin of a patient. In order to prevent the pouch from causing additional unnecessary trauma to the incision (wound) of the patient, it is generally preferred that the pouch be made of a softer material. However, the softer the material of the bag, the lower its strength, which is likely to cause the bag to be crushed and broken when it is taken out through the wound. Preferably, the hardness Hard of the bag body of the object fetching bag is 80A or less and 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 to fig. 2-3, the distal end of the primary pull wire 50 includes a sliding knot 51, and the distal end of the primary pull wire 50 passes through the pocket tunnel 211 and its proximal end 53 passes through the sliding knot 51, forming a primary pull wire loop 52 of approximately the same size as the pocket. The elastic bodies 21 are inserted into the pocket tunnels 122. After the extractor device 10 is assembled (see fig. 2), the extractor bag 100 is usually wrapped around the elastic body 21 and is accommodated in the hollow tube 33 (see fig. 1). The invention of US patent 8986321 discloses various winding and storage modes of the fetching device, and other fetching devices are specifically disclosed, and one of ordinary skill can apply the invention with slight modifications.
The related operations of clinical application of the extractor device 10 can be generally divided into the following stages:
in the first stage: a preliminary stage. The extraction instrument is inserted into the patient through the puncture cannula and extends to the target area. And a second stage: and (4) an unfolding stage. The handle assembly is operated to push out the object taking bag, and the elastic body automatically recovers and props open the object taking bag. And a third stage: and (5) cutting off the specimen. The cut diseased tissue or organ is trimmed and dropped into an extraction bag. The fourth stage, specimen taking-out stage. Referring to fig. 4, the opening mechanism is taken out first, and the main pull line is pulled to fold the bag opening of the object fetching bag. The main pull wire is then pulled to remove the access bag and the specimen contained therein through the puncture cannula or through a skin incision. In this process, since the inner diameter of the puncture cannula or the incision of the minimally invasive surgery is small, the tissues in the fetching bag are easily wrapped together, the middle part is thick, the two ends are small (refer to fig. 4), and the tissues are difficult to be taken out through the small incision. The object fetching bag is easy to break and the small incision is easy to be accidentally damaged.
Figures 5-6 depict yet another improved dispenser 10a (not shown in full construction, as understood with reference to figures 1-4) incorporating an improved dispenser bag 200. The bag 200 includes a mouth 220 that can be opened and closed, and a closed bag body 230 extending from the mouth 220. The pocket 220 includes a pocket tunnel 222 surrounding the pocket, the pocket tunnel 222 to accommodate the opening mechanism 20 and the primary pull wire 50. The bag body tunnel 222 is formed by curling and welding the film sheet 201 forming the bag to form a bag opening welding seam 224 and cutting excess material. The bag body 230 includes a first bag surface 233 and a second bag surface 235, and the first bag surface 233 and the second bag surface 235 are formed by welding a film sheet 201 constituting the bag to form a bag body weld 237 and cutting an excess material.
The access bag 200 further includes a first bag face tunnel 260, the bag face weld 260 including an elongated film 261, a first bag face weld 263 and a second bag face weld 265 welding the elongated film 261 to surfaces of the first bag face 233 and the second bag face 235 in a spaced-apart manner (as understood with reference to fig. 5-6), the first bag face weld, the second bag face weld, the first bag face, the second bag face and the elongated film defining a tunnel, i.e., the first bag face tunnel 260. The long film 261 is not a part of the film sheet 201, but is additionally cut. The long film 261 may be made of the same material and have the same thickness as the film sheet 201, or may be different. When the long film 261 is made of a material different from that of the film sheet 201, it should be tested that the weldability with the film sheet 201 is good. The bag shown in fig. 5-6 is formed by folding and welding a single piece of film, however, 2 pieces of film can be welded in alignment to form the bag. Similarly, the first bag face tunnel shown in fig. 5-6 is welded to both the first bag face and the second bag face, but may be welded to only the first bag face or only the second bag face.
With continued reference to fig. 5, the extractor 10a further includes a main pull cord 50 and a first binding 240. The far end of the main pull wire comprises a sliding joint, the far end of the main pull wire penetrates through the bag opening tunnel, and the near end of the main pull wire penetrates through the sliding joint to form a pull wire ring with the size being approximately the same as that of the bag opening. The first binding 240 passes through the first bag surface tunnel 260, and a first end 241 and a second end 249 of the first binding are exposed outside the first bag surface tunnel 260. The first end 241 and the second end 249 of the binding line are respectively pulled by using the endoscope knotting forceps and the grasping forceps, the middle part of the bag body can be folded to enable the bag body to be approximately gourd-shaped (refer to fig. 7), and the first end and the second end of the first binding line are knotted with each other, so that the object taking bag is prevented from being pulled out of the body through the wound to form a middle expanded structure. The thin neck of the 'gourd' can be adjusted by adjusting the tightness of the tension of the first end and the second end of the first binding wire according to the requirement.
In conjunction with the foregoing, the dispenser 10a includes a dispensing bag 200, a deployment mechanism 20, a catheter assembly 30, a handle assembly 40, a main pull cord 50 and a first binding wire 240. The structure and the composition of the article taking device 10a are similar to those of the article taking device 10, and the installation mode is the same as the article taking bag storage mode. It should be understood by those skilled in the art that when the extractor should be used for extracting tissue clinically, as understood in conjunction with fig. 4, in the process of pulling the main pulling wire to extract the extraction bag and the specimen contained therein through the puncture cannula or through the skin incision, due to the small inner diameter of the puncture cannula or the minimally invasive surgery incision, the tissue in the extraction bag is easily wrapped together to form a swelling structure with a large middle and two small ends (refer to fig. 4). When the article taking device 10a is used, the middle part of the bag body can be folded to form an approximate gourd shape (refer to fig. 7), and the first end and the second end of the first binding line are knotted with each other, so that a middle expanded structure is prevented from being formed in the process that the article taking bag is pulled out of the body through the wound. The thin neck of the 'gourd' can be adjusted by adjusting the tightness of the tension of the first end and the second end of the first binding wire according to the requirement.
Referring to fig. 8-10, a further improved extractor 10b (not shown in full construction, as understood with reference to fig. 1-4) is substantially identical to the extractor 10a, except for the method of positioning the first binding 240. Briefly, the dispenser 10b includes a modified access bag 200, a main pull cord 50 and a first binding 240. The far end of the main pull wire comprises a sliding joint, the far end of the main pull wire penetrates through the bag opening tunnel, and the near end of the main pull wire penetrates through the sliding joint to form a pull wire ring with the size being approximately the same as that of the bag opening. The first end 241 of the first binding 240 includes a first pre-arranged knurl 243, and the second end 249 of the first binding passes through the first bag face tunnel 260 and then passes through the first knurl 243. Referring now to fig. 9, the twist knot is a knot formed by interlacing the first end 241 and the second end 249 of the first binding thread with each other in a twisted twist-like manner. Fig. 10 shows the knotting manner of the twist knot, fig. 9 can be regarded as the twist knot which is only intertwined and staggered 1 time, and fig. 10 shows the twist knot which is intertwined and staggered 2 times. Referring to fig. 9-10, those skilled in the art should readily understand the formation of the twist knot, and multiple winding of the staggered twist knot is more advantageous for anti-loosening. It should be readily understood by those skilled in the art that when the first end 241 and the second end 249 shown in fig. 10 are pulled, the twist knot shrinks to zero internal space, and a dead knot is formed. In the twist knot of fig. 8-9, the second end 249 passes through the first pocket side tunnel 260 and then through the first twist knot 243, and then the position of the twist knot can be adjusted before the twist knot is tightened. After confirming that the position of the twist knot meets the requirement, tensioning the twist knot. At this time, the bag body can be folded by pulling the second end 249 and pushing the knurl 243 to form an approximate gourd-shaped bag body (refer to fig. 7). Finally, a knot is formed at the first twist knot 243 with the second end 249 of the first tie to prevent the formation of a medial bulge during the process of pulling the retrieval bag out of the body through the wound. After the twist knot 243 is prefabricated and the second end 249 penetrates through the twist knot, the grasping forceps and the knotting forceps are used under the endoscope, one instrument grasps the second end 249 and pulls the second end, and the other instrument pushes the twist knot, so that the bag body can be folded; the thin neck of the 'gourd' can be adjusted according to the requirement by adjusting the pushing position of the twist knot and the tightness of the tension of the second end. The first binding wire near the knurl knot is then wrapped several turns around the head of the knotter clamp, and the second end is threaded through the turns and tightened to form a knot, thereby preventing loosening. This tightening and tying is simple, however, other tying methods may be used.
Similar to the dispenser 10, the dispenser 10b further comprises a catheter assembly and a handle assembly extending therethrough, and an opening mechanism connected to the handle assembly for opening the pouch; the opening mechanism is accommodated in the bag opening tunnel, and the bag is curled or folded on the outer surface of the opening mechanism and is accommodated in the catheter assembly together.
In yet another aspect of the present invention, a method for using extractor 10b is provided, comprising the steps of:
s1, inserting the fetching device into the patient body through the puncture cannula and extending to the target area;
s2, pushing the object-taking bag out by operating the handle assembly, and automatically restoring the elastic body to open the object-taking bag;
s3, cutting the lesion tissue or organ, cutting off and dropping into an extraction bag;
s4, taking out the opening mechanism, and drawing the main pull line to fold the bag mouth of the object-taking bag;
s5: the endoscope knotting forceps and the grasping forceps enter the body of the patient through the puncture channel, the second end of the first binding line is pulled and the first twist knot is pushed to fold the middle of the object taking bag body to form a gourd-shaped bag body, and the knotting forceps are used for enabling the second end of the second binding line to form a knot at the first twist knot;
s6, the bag and the tissue are pulled out through the wound of the patient.
In another aspect of the present invention, a method for manufacturing an extraction bag and a binding thread of an extractor 10b includes the steps of:
s1, cutting the qualified raw material film to form the fabric of the bag;
s2, rolling one side of the fabric, and welding to form a bag opening tunnel;
s3, cutting the raw material film into strip films;
s4, placing the raw material film at a proper position of the fabric of the fetching bag, and welding to form a first bag surface tunnel;
s5: the material of the previous step is folded towards the reverse side of the first bag surface tunnel and welded to form a bag body;
s6, prefabricating a sliding joint at the far end of the main stay wire, wherein the far end of the main stay wire penetrates through the bag opening tunnel, and the near end of the main stay wire penetrates through the sliding joint to form a stay wire ring with the size approximately equal to that of the bag opening;
and S7, enabling the first end of the first binding line to comprise a preset first twist knot, and enabling the second end of the first binding line to pass through the first twist knot after passing through the first bag surface tunnel.
Referring to fig. 11, a further modified extractor 10c (not shown in the figures, as understood with reference to fig. 1-4) is substantially identical to the extractor 10b, except for the method of positioning the first binding 240. Briefly, the dispenser 10c includes a modified access bag 200, a main pull cord 50 and a first binding 240. The far end of the main pull wire comprises a sliding joint, the far end of the main pull wire penetrates through the bag opening tunnel, and the near end of the main pull wire penetrates through the sliding joint to form a pull wire ring with the size being approximately the same as that of the bag opening. The first end 241 of the first binding 240 comprises a preset first twist knot 243, and the second end 249 of the first binding passes through the first twist knot 243 after being wound around the first bag surface tunnel for N circles (N is more than or equal to 2). Fig. 11 depicts a schematic of N-3. The manufacturing and using methods of the object taking device 10c are basically the same as those of the object taking device 10b, and compared with the object taking device 10b, the first binding wire is wound by N circles and then penetrates through the twist knot, so that the rebound looseness can be prevented in the process of pulling the first binding wire to tighten the bag body under the endoscope. When the fetching bag is completely in the non-tight state, the first binding wire wound by a plurality of circles can be pulled to be rapidly folded. When the bag body is folded and the tissues in the bag body generate counter force, the bag body can be folded to a desired tightness degree by gradually pulling the first binding wire through small feeding, and meanwhile, the multi-circle binding wire is favorable for preventing rebound looseness.
Referring to fig. 12-13, yet another preferred extractor 10d for minimally invasive surgery (not shown in full construction, as understood with reference to fig. 1-4). The dispenser 10d includes a dispenser bag 200 and a main cord 50 a. The bag 200 includes a mouth 220 that can be opened and closed, and a closed bag body 230 extending from the mouth 220. The pocket 220 includes a pocket tunnel 222 surrounding the pocket, the pocket tunnel 222 being configured to receive the opening mechanism 20 and the primary pull wire. The bag body 230 includes a first bag surface 233 and a second bag surface 235. The pouch 200 further includes a first pocket face tunnel 260 formed by additional film welds on the first and second pocket faces. The first bag surface tunnel is welded to both the first bag surface and the second bag surface, but may also be welded only to the first bag surface or only to the second bag surface.
As will now be appreciated with reference to fig. 12 and 13, the primary pull wire 50a includes a first twist knot 53a proximate the distal end 51a of the primary pull wire and a second twist knot 57a proximate the proximal end 59a of the primary pull wire; the proximal end 59a of the main pull wire passes through the pocket opening tunnel 222 and then passes through the second twist knot 57a to form a pocket loop 58a, and the distal end 51a of the main pull wire passes through the first pocket surface tunnel 260 and then passes through the first twist knot 53a to form a first binding loop 52 a. The knotting manner of the first twisted knot 53a (the second twisted knot 57a) is the same as the knotting manner of the first twisted knot 243, and will not be described herein again. The far end of the main stay wire is wound in the first bag surface tunnel only one turn, however, the far end of the main stay wire can be wound in the first bag surface tunnel for N turns (N is more than or equal to 2) and then passes through the first twist knot. In another scheme, before the twist knots are tensioned, the positions of the twist knots are adjusted, so that the distance between the first twist knot and the second twist knot is approximately equal to the distance from the mouth of the first pocket-face tunnel to the mouth of the pocket-mouth tunnel. After confirming that the position of the twist knot meets the requirement, tensioning the twist knot.
Similar to the dispenser 10, the dispenser 10d further includes a catheter assembly and a handle assembly extending therethrough, and an opening mechanism connected to the handle assembly for opening the pouch; the opening mechanism is accommodated in the bag opening tunnel, and the bag is curled or folded on the outer surface of the opening mechanism and is accommodated in the catheter assembly together.
In yet another aspect of the present invention, a method for using the extractor 10d is provided, comprising the steps of:
s1, inserting the fetching device into the patient body through the puncture cannula and extending to the target area;
s2, pushing the object-taking bag out by operating the handle assembly, and automatically restoring the elastic body to open the object-taking bag;
s3, cutting the lesion tissue or organ, cutting off and dropping into an extraction bag;
s4, taking out the opening mechanism, pulling the main pull wire and pushing the second twist knot by the duct component to fold the mouth of the object-taking bag, and taking out the duct component;
s5: the endoscope knotting forceps and the grasping forceps enter a patient body through a puncture channel, the far end of the main pull wire is pulled, the first twisted knot is pushed, the middle of the object taking bag body is folded, a gourd-shaped bag body is formed, and the knotting forceps are used for enabling the far end main pull wire to form a knot at the first twisted knot;
s6, the bag and the tissue are pulled out through the wound of the patient.
Referring to fig. 7, 12 and 13, the application of the extractor 10d is understood. The proximal end 59a of the main pulling wire pushes the second twist knot 57a with the catheter assembly to gather the mouth of the bag and remove the catheter assembly. Then, the bag body is folded to form an approximate gourd-shaped shape by pulling the distal end 51a of the main pull wire and pushing the first twist knot 53a (refer to fig. 7). Finally, the distal end 51a of the main pull line is used for forming a knot at the first twist knot 53a so as to prevent the middle swelling structure from being formed in the process of pulling the fetching bag out of the body through the wound. When the first twist knot 53a is prefabricated and the far end 51a of the main stay wire penetrates through the twist knot, the far end 51a of the main stay wire is grabbed and pulled by one instrument and the twist knot is pushed by the other instrument under the endoscope by using the grabbing forceps and the knotting forceps, so that the bag body can be folded; the thin neck of the 'gourd' can be adjusted according to the requirement by adjusting the pushing position of the twist knot and the tightness of the tension of the second end. The main wire near the knot is then wound around the head of the knotter's pliers several turns, and the distal end 51a of the main wire is passed through the turns and tightened to form a knot, thereby preventing loosening. This tightening and tying is simple, however, other tying methods may be used.
In another aspect of the present invention, a method for manufacturing an extraction bag and a binding of an extractor 10d includes the steps of:
s1, cutting the qualified raw material film to form the fabric of the bag;
s2, rolling one side of the fabric, and welding to form a bag opening tunnel;
s3, cutting the raw material film into strip films;
s4, placing the raw material film at a proper position of the fabric of the fetching bag, and welding to form a first bag surface tunnel;
s5: the material of the previous step is folded towards the reverse side of the first bag surface tunnel and welded to form a bag body;
s6, prefabricating a first twist knot and a second twist knot by using the main stay wire;
and S7, the near end of the main pull wire passes through the bag opening tunnel and then passes through the second twist knot, and the far end of the main pull wire passes through the first bag opening tunnel and then passes through the first twist knot.
Fig. 14 depicts yet another optimized extractor 10e for minimally invasive surgery (all structures not shown in the figures, as understood with reference to fig. 1-4). The object extractor 10e is substantially identical in structure and composition to the object extractor 10d, except for the arrangement of the first bag face tunnel of the object extraction bag. The dispenser 10e includes a dispenser bag 200e and a main pull cord 50 a. The bag 200a includes a mouth 220 that can be opened and closed, and a closed pocket 230 extending from the mouth 220. The pocket 220 includes a pocket tunnel 222 surrounding the pocket, the pocket tunnel 222 to accommodate the opening mechanism 20 and the primary pull wire 50. The bag body 230 includes a first bag surface 233 and a second bag surface 235.
The bag 200 further includes a first pocket face tunnel 260a, the first pocket face tunnel 260a being formed by a plurality of spaced short tunnels 269 a. Each of the short tunnels 269a is formed by a first pocket face weld 263a and a second pocket face weld 265a that weld an additional film 261a to the outer surface of the first pocket face 233 and/or the second pocket face 235. The plurality of spaced short tunnels are aligned in a manner substantially parallel to the pocket opening tunnels with the central axes of the short tunnels substantially aligned. The short tunnel 269a may be formed by welding a long film 261a at one time using a suitable die to form a plurality of spaced short tunnels, and then trimming off the unwelded long film between the short tunnels. The method for arranging the main pull line 50a in the bag opening tunnel and the first bag surface tunnel is completely the same as that of the above-mentioned extractor 10d, and therefore, the description thereof is omitted. Similar to the dispenser 10, the dispenser 10e further includes a catheter assembly and a handle assembly extending therethrough, and an opening mechanism connected to the handle assembly for opening the pouch; the opening mechanism is accommodated in the bag opening tunnel, and the bag is curled or folded on the outer surface of the opening mechanism and is accommodated in the catheter assembly together.
In another aspect of the present invention, a method for manufacturing an extraction bag and a binding thread of an extractor 10e includes the steps of:
s1, cutting the qualified raw material film to form the fabric of the bag;
s2, rolling one side of the fabric, and welding to form a bag opening tunnel;
s3, cutting the raw material film into strip films;
s4, placing the raw material film at a proper position of the fabric of the fetching bag, and welding at one time by using a proper mould to form a plurality of short tunnels at intervals;
s5: the material of the previous step is folded towards the reverse side of the first bag surface tunnel and welded to form a bag body;
s6: trimming and removing the unwelded long film between the short tunnels;
s7, prefabricating a first twist knot and a second twist knot by using the main stay wire;
and S8, the near end of the main pull wire passes through the bag opening tunnel and then passes through the second twist knot, and the far end of the main pull wire passes through the first bag opening tunnel and then passes through the first twist knot.
Compared with the object obtaining bag 200, the object obtaining bag 200a has no difficulty in manufacturing the object obtaining bag and the tunnel, but when the first tying line 240 or the main pulling line 50a is arranged, the spaced type bag surface tunnel of the object obtaining bag 200a is used, so that the threading is more convenient. Particularly when the first binding wire 240 (or primary pull wire 50a) is tunneled through the first pocket face a plurality of times.
Referring to fig. 5 and as shown in fig. 14, in a further modification, the first pocket face tunnel 260 of the bag 200 is provided at about one third of the mouth of the body of the bag. In a specific arrangement, the position of the first bag-face tunnel satisfies the following relation:
H2/6≤H1≤H2/2
wherein:
h1-the distance between the first pocket face tunnel and the pocket mouth;
h2-the maximum depth value of the specific opening of the bag bottom of the object fetching bag.
The arrangement is favorable for fixing a part of tissues at the front end of the fetching bag, and prevents the tissues from completely sliding to the rear part of the fetching bag to cause overlarge local volume when the fetching bag containing the tissues is pulled out through a small incision by using the main pull wire. When H is present1Is less than H2When the mouth part is too close to the first opening, the mouth part is not convenient to fold and pull out; when H is present1Greater than H2When the bag is used for holding the object-taking bag, the bag is not usedThe function of a portion of the fabric fixed to the front end of the bag (i.e., closer to the mouth).
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 (6)
1. A medical disposable fetching device containing a main pull line comprises a fetching bag, wherein the fetching 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 body comprises a first bag surface and a second bag surface; the bag opening comprises a surrounding bag opening tunnel; the method is characterized in that: the outer surface of the first bag surface and the outer surface of the second bag surface of the bag body comprise a first bag surface tunnel, the first bag surface tunnel is formed by welding an additional film on the first bag surface and the second bag surface, the bag further comprises a main pull line, and the main pull line comprises a first twist knot close to the far end of the main pull line and a second twist knot close to the near end of the main pull line; the near end of the main stay wire penetrates through the bag opening tunnel and then penetrates through the second twist knot, and the far end of the main stay wire penetrates through the first bag surface tunnel and then penetrates through the first twist knot.
2. The extractor of claim 2, wherein: the distance between the first twist knot and the second twist knot is approximately equal to the distance from the mouth of the first bag-face tunnel to the mouth of the bag-mouth tunnel.
3. The extractor of claim 3, wherein: the bag opening can be folded by pulling the near end of the main pull line and pushing the second twist knot.
4. The device for taking out articles according to claim 4, wherein the bag body is formed into a gourd-like shape by pulling the distal end of the main pulling wire and pushing the first knot, and the main pulling wire at the distal end forms a knot at the first knot to prevent the middle of the bag from being expanded during the process of pulling the bag out of the body through the wound.
5. The extractor of claim 5, wherein: the bag opener also comprises a catheter component, a handle component penetrating through the catheter component and an opening mechanism which is connected with the handle component and can open the bag; the opening mechanism is accommodated in the bag opening tunnel, and the bag is curled or folded on the outer surface of the opening mechanism and is accommodated in the catheter assembly together.
6. A method for manufacturing a bag comprises the following steps:
s1, cutting the qualified raw material film to form the fabric of the bag;
s2, rolling one side of the fabric, and welding to form a bag opening tunnel;
s3, cutting the raw material film into strip films;
s4, placing the raw material film at a proper position of the fabric of the fetching bag, and welding to form a first bag surface tunnel;
s5: the material of the previous step is folded towards the reverse side of the first bag surface tunnel and welded to form a bag body;
s6, prefabricating a first twist knot and a second twist knot by using the main stay wire;
and S7, the near end of the main pull wire passes through the bag opening tunnel and then passes through the second twist knot, and the far end of the main pull wire passes through the first bag opening tunnel and then passes through the first twist knot.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654346.9A CN111685822A (en) | 2020-07-09 | 2020-07-09 | Medical disposable fetching device containing main pull wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654346.9A CN111685822A (en) | 2020-07-09 | 2020-07-09 | Medical disposable fetching device containing main pull wire |
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| CN111685822A true CN111685822A (en) | 2020-09-22 |
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| CN202010654346.9A Pending CN111685822A (en) | 2020-07-09 | 2020-07-09 | Medical disposable fetching device containing main pull wire |
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| CN209847344U (en) * | 2019-04-10 | 2019-12-27 | 安能医疗器械(常熟)有限公司 | Disposable article taking bag for minimally invasive surgery |
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| JP2005270432A (en) * | 2004-03-25 | 2005-10-06 | Ube Ind Ltd | Method of holding stent in reduced diameter state and stent held in reduced diameter state |
| EP1700569A1 (en) * | 2005-03-07 | 2006-09-13 | Tyco Healthcare Group Lp | Specimen retrieval pouch and method of use |
| CN206809341U (en) * | 2017-01-10 | 2017-12-29 | 温州市人民医院 | Appendix takes out bag |
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Application publication date: 20200922 |
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