CN111700655A - Medical object taking device containing loose state - Google Patents

Abstract

The invention discloses a loose medical object taking device, which comprises an object taking bag, wherein the object 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 opening comprises a surrounding tunnel; the object fetching bag further comprises a binding wire, the far end of the binding wire comprises a sliding joint, the far end of the binding wire penetrates through the tunnel, the near end of the binding wire penetrates through the sliding joint, a binding wire ring with the size approximately the same as that of the bag opening is formed, and the object fetching device further comprises a flexible hollow tube, wherein the hollow tube comprises a far end tube part, a middle tube part, a near end tube part and an axis; the specimen bag is crimped or folded to be received in a hollow tube.

Description

Medical object taking device containing loose state

Technical Field

The invention relates to a minimally invasive surgical instrument, in particular to a loose 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 self-hardening lumen endoscopic surgery, various specimen bags special for endoscopic surgery are developed at home and abroad. Although the specimen bags are different in structure and use mode, the general types can be divided into two types: first, single specimen bags. US5037379 discloses a single-side opening threaded specimen bag which is used by grasping the specimen bag body with a grasper and passing the grasped specimen bag body through a puncture catheter or a small incision into a patient. And the second type is an extraction instrument comprising a specimen bag, a catheter and a stretching mechanism. US patent inventions US5465731, US patent 5480404, US patent 6383197 and the like disclose various fetching instruments, wherein a specimen bag is rolled up and contained in a catheter, when in use, the fetching instrument enters the body of a patient through a puncture cannula, then a stretching mechanism is pushed to push the rolled specimen bag out of the catheter, and the stretching mechanism stretches the specimen bag, so that the specimen bag is conveniently loaded into tissues or diseased organs cut in an operation.

The use cost of the fetching device with the opening mechanism is high due to the high manufacturing cost of the fetching device with the opening mechanism, and the fetching device with the opening mechanism is low in the developing country or the underdeveloped country. The single specimen bag is low in manufacturing cost, but when the single specimen bag is clinically applied, the single specimen bag is difficult to place into a patient body through a puncture outfit channel, and the single specimen 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, so that the single specimen bag is accidentally broken. The design and manufacture cost is low, and the fetching device which is safe to use has larger clinical application value.

Disclosure of Invention

The invention provides a loose medical object taking device, which comprises an object taking bag, wherein the object 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 opening comprises a surrounding tunnel; the object fetching bag further comprises a binding wire, the far end of the binding wire comprises a sliding joint, the far end of the binding wire penetrates through the tunnel, the near end of the binding wire penetrates through the sliding joint, a binding wire ring with the size approximately the same as that of the bag opening is formed, and the object fetching device further comprises a flexible hollow tube, wherein the hollow tube comprises a far end tube part, a middle tube part, a near end tube part and an axis; the specimen bag is crimped or folded to be received in a hollow tube.

Preferably, the specimen bag is curled or folded to form a wrapped specimen bag roll and a loose specimen bag roll, and the diameter of a circumscribed circle at the thickest position of the wrapped specimen bag roll is Dj; the inner diameter Dz of the hollow tube is more than or equal to 1.5Dj, so that the specimen bag is accommodated in the hollow tube in a loose state of the specimen bag roll.

Preferably, the extractor enters the body of the patient through a puncture channel with the inner diameter Dc, and the outer diameter Dw of the hollow tube of the extractor is larger than Dc in a natural state; and under the state of compression and contraction, the hollow tube of the object taking device and the maximum peripheral diameter Ds of the specimen bag contained by the hollow tube are smaller than Dc.

Preferably, the distal tube portion comprises an arcuate elongate strip of length L1a and width 1a extending distally from the tube wall thereof and an angled nozzle connecting the elongate strip and the tube wall; from a transverse perspective, the angled nozzle forms an obtuse angle ANG1 with the elongate strip.

Preferably, the intermediate tube portion comprises a plurality of transverse slots, viewed in the axial direction, the transverse slots being spaced apart in the axial direction to form rows of transverse slots; the plurality of transverse slots form a first row of transverse slots, a second row of transverse slots, a third row of transverse slots, and a fourth row of transverse slots in sequence about the periphery of the intermediate tube portion.

Preferably, the first and third rows of transverse slits are symmetrical with respect to the axis, and the second and fourth rows of transverse slits are symmetrical with respect to the axis; two adjacent transverse cutting grooves in the axial direction define a transverse rib, and an axial rib is defined by the two adjacent row-shaped transverse cutting grooves at the circumferential view angle; the annular visual angle is that two adjacent rows of transverse cutting grooves of the middle pipe part are distributed in a staggered mode in the axis direction, and formed transverse ribs are not aligned; any virtual section perpendicular to the axis is intersected with the middle pipe part, and the intersection line is a multi-section line and does not form a complete ring.

Preferably, the proximal tube portion includes a first strap and a second strap extending proximally from the tube wall, the first and second straps forming a heat seal seam.

In another aspect of the invention, the invention provides an extractor product bag, which further comprises a sterilization packaging bag, wherein the extractor is packaged in the sterilization packaging bag and is provided for clinical application after sterilization.

In yet another aspect of the present invention, a method of manufacturing an extractor product package comprises the steps of;

s1, extruding a pipe with a proper diameter and a proper wall thickness by using proper raw materials and cutting the pipe to a proper length;

s2, cutting the slender strip and the inclined nozzle to form the far-end tube part;

s3, cutting a first overlapping edge and a second overlapping edge which form the near-end tube part;

s4, welding to form a heat seal welding seam of the near-end pipe part;

s5: the first blanking forms a first and a third row of transverse cutting grooves, and the second blanking forms a second and a fourth row of transverse cutting grooves;

s6, the specimen bag and the binding wire are curled and put into the middle tube part;

s7, putting the extractor into a sterilized packaging bag and sealing the bag;

s8: sterilizing with ethylene oxide or irradiation.

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 specimen bag 100 and a pull wire 50;

FIG. 2 is an exploded view of the specimen bag 100 and the pull wire;

FIG. 3 is a schematic view of a specimen bag crimped in a parallel tunnel fashion;

FIG. 4 is a schematic view of a specimen bag folded in a parallel tunnel fashion;

FIG. 5 is a schematic view of a rolled (folded) strip-like specimen bag;

fig. 6 is a schematic view of a hollow tube 200;

figure 7 is yet another schematic view of hollow tube 200;

fig. 8 is a schematic view of a clinical application method of the extractor 10.

Fig. 9 is a schematic view of a hollow tube 200 a;

figure 10 is yet another schematic view of hollow tube 200 a;

FIG. 11 is a schematic view of the distal tube portion 210 b;

FIG. 12 is yet another schematic view of the distal tube portion 210 b;

FIG. 13 is yet another schematic view of the distal tube portion 210 b;

FIG. 14 is a schematic view of a main duct wall 201 a;

FIG. 15 is yet another schematic view of the main duct wall 201 a;

FIG. 16 is yet another schematic view of main tube wall 201 a;

FIG. 17 is yet another schematic view of main tube wall 201 a;

FIG. 18 is yet another schematic view of main tube wall 201 a;

FIG. 19 is a schematic view of the proximal tube portion 250 c;

FIG. 20 is a schematic view of the distal tube portion 210 a;

FIG. 21 is a partial enlarged view of the distal tube portion 210a of FIG. 20;

FIG. 22 is a further schematic view of intermediate tube portion 230 b;

FIG. 23 is an enlarged partial view of the middle tube portion 230b of FIG. 22;

FIG. 24 is a schematic view of the intermediate tube portion 230 c;

FIG. 25 is a further schematic view of the intermediate tube portion 230 c;

FIG. 26 is a further schematic view of the intermediate tube portion 230 d;

fig. 27 is a schematic view of a dispenser product package 1 a;

fig. 28 is a schematic view of a clinical application method of the extractor 10 a.

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. 1-5 depict the structure and composition of a medical specimen bag 100. The specimen 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. More specifically, the bag body 102 extends from the tunnel 111 to the bag bottom 105 in a direction away from the bag opening 110. The bag body 102 tapers distally from the mouth 101. However, one of ordinary skill in the art will appreciate that the pouch 101 may be configured in any other shape. The specimen bag 100 is typically made of a thermoplastic elastomer film. There are many thermoplastic elastomer films suitable for making specimen bags, including but not limited to TPEE (polyester thermoplastic elastomer), TPU (polyurethane thermoplastic elastomer), TPEE (polyamide thermoplastic elastomer), and the like. When the specimen bag is clinically applied, the specimen bag is usually used for containing pathological tissues and is taken out through a small incision on the skin of a patient. To prevent the specimen bag from causing additional unnecessary damage to the incision (wound) of the patient, the material of the specimen bag is generally softer as possible. However, the softer the material of the specimen bag, the lower its strength, and the more likely it is to be crushed when the specimen bag is taken out through the wound. Preferably, the material hardness Hard of the specimen bag body 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.

The specimen bag 100 also includes a pull cord 50. The pull wire 50 includes a distal sliding joint 51 and a pull wire proximal end 53 and a pull wire cord 54 extending from the proximal end to the distal end. The distal portion of the pull wire 50 is passed through the tunnel 111 and the proximal end 53 of the pull wire is passed through the slip segment 51, forming a ligature loop 52 of approximately the same size as the pocket opening. Sliding the pull wire rope 54 in the sliding knob 51 by pulling the pull wire proximal end 53 may decrease the wire tie 52 until the bag mouth 101 is tightened.

FIG. 3 depicts a method of crimping to form a strip-like sample bag roll by folding the tunnel 111 of the sample bag 100 in half and compressing it, with the sample bag 100 in its entirety folded in half; the bag body 102 is then rolled up with the bag bottom 105 towards the bag mouth 101. In this process, the bag bottom 105 is first formed into a small cylinder, which is further rolled to form a larger cylinder until the bag bottom is rolled to fit snugly into the tunnel, forming a strip-like roll of specimen bags. The method is to curl the bag bottom first, but can also be formed by rolling with the tunnel 111 as the axis. FIG. 4 depicts a method of folding a strip-like sample bag roll by folding the tunnel 111 of the sample bag 100 in half and compressing the sample bag 100 in half; the bag body 102 is folded with the bag bottom 105 toward the bag opening 101. In this process, the bag bottom 105 is first folded to form a folded section, and further folded, the bag body 102 is folded several times to form a corrugated body, and the corrugated body is tightly attached to the tunnel 107 to form a strip-shaped sample bag roll. Fig. 3-4 depict a method of crimping an elongated specimen pouch in a generally parallel tunnel fashion, however, an elongated specimen pouch may be crimped in a generally perpendicular tunnel fashion, or may be crimped at an acute angle to the tunnel. The method is substantially the same, and the curling method can be easily understood by referring to fig. 3-4 in combination with the above description, and thus, the description thereof is omitted.

When the specimen bag 100 is rolled (or folded) into a strip-shaped specimen bag roll, two states, a tightly wrapped specimen bag roll and a loose specimen bag roll, can be formed. When the specimen bag 100 is tightly rolled (or folded) to form a tightly wrapped elongated specimen bag roll, it is referred to as a tightly wrapped specimen bag roll. The diameter of the circumscribed circle at the thickest position of the tightly wrapped specimen bag roll is Dj, and the length of the tightly wrapped specimen bag roll is L. If the tightly wrapped specimen bag roll is placed in a hollow tube with an inner diameter Ds (Ds > Dj), the tightly wrapped specimen bag roll will automatically loosen until it is restrained by the wall of the hollow tube, and the specimen bag roll in this state is in a loose state. However, if the numerical values of Ds and Dj are not greatly different, the loosening effect is not significant. In the invention, the tightly wrapped specimen bag roll is put into a hollow tube with the inner diameter more than or equal to 1.5 times Dj (namely Ds more than or equal to 1.5Dj), the tightly wrapped specimen bag roll is automatically loosened until being limited by the wall of the hollow tube, and the specimen bag roll in the state is called as a loose specimen bag roll.

Fig. 6 depicts a flexible hollow tube 200. The flexible hollow tube 200 comprises a distal tube portion 210, an intermediate tube portion 230 and a proximal tube portion 250. The main pipe wall 201 of the hollow pipe 200 has a wall thickness Ht, and the inner diameter of the hollow pipe 200 is Dz. 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), etc. In a modified embodiment, the hollow tube is made of high-fluidity plastic into a thin-walled tube, and in a specific design scheme, the tube wall thickness Ht of the hollow tube is less than or equal to 0.2, so that the hollow tube has enough flexibility and can be bent and folded freely. The flexibility of the hollow tube can be improved by optimizing the material selection, for example, the medical PVDF material of Kynar brand Supeflex series is selected, and the hollow tube is suitable for manufacturing ultrathin, super-flexible and thin-walled tubes with enough strength. More material can be obtained by consulting various material suppliers.

Fig. 7 depicts a medical extractor 10 comprising the previously described extractor bag 100, a binding 50 and a hollow tube 200. In one embodiment, the hollow tube inner diameter Dz > Ds (Ds > 1.5 Dj). The specimen bag 100 is received within the intermediate tube portion 230 of the hollow tube in a loose, rolled-up configuration.

Up to now, the fetching device is usually designed to enter the body of a patient through a 10 mm-sized puncture device, and the 10 mm-sized puncture devices of different manufacturers have different channel apertures, but the aperture is 10.5-10.9 mm. To date, prior art designs have typically designed the hollow tube of the extractor, which holds the specimen bag, as an undeformable (difficult to deform) rigid hollow tube, such as a metal hollow tube or a hard plastic hollow tube. The outer diameter of the rigid hollow tube or the hard plastic hollow tube is designed to be smaller than the puncture channel through which the rigid hollow tube passes, and the outer diameter of the rigid hollow tube is usually less than or equal to 10 mm. When a rigid hollow tube is used, the inner diameter Dg is typically designed to be equal to or slightly larger than the maximum outer diameter of the specimen bag roll in the tightly wrapped state, i.e., Dg ≈ Dj. The specimen bag inside the contained rigid hollow tube is typically pushed out using a pushing method. It will be appreciated by those skilled in the art that when the bag is pushed out, because the bag is too flexible, when the bag is pushed out of the end, the pushing force cannot be transmitted to the other end of the hollow tube, often resulting in the bag being locally compressed and accumulating, as the push progresses, accumulating more and more, causing the specimen bag to jam or be damaged. In addition, when a specimen bag is manufactured using a flexible thermoplastic elastomer film, if the specimen bag is stored in an inner tube in a wrapped-state specimen bag roll, the specimen bag is stored for a long time after sterilization (the sterilization expiration date of current disposable medical products is generally 5 years), and after the wrapped-state specimen bag roll is stored for a long time, it is difficult to reopen the wrapped-state specimen bag roll in a patient's body using a laparoscopic instrument at the time of use. Some packages that are too tight, even due to the stress relaxation effect of the thermoplastic elastomer material, cause the specimen bag films to stick to each other and not unfold again. Therefore, the loose specimen is packed in a bag roll, and has excellent clinical application value.

In one aspect of the present invention, which is in stark contrast to prior art design concepts, the present invention employs a flexible hollow tube having an outer diameter Dw (Dz +2 Ht) that is designed to be larger than the puncture channel through which it is intended to pass, such that the specimen bag is received within the intermediate tube portion 230 of the hollow tube in a loose specimen bag roll. Namely, the extractor enters the body of a patient through a puncture channel with the inner diameter Dc, and the outer diameter Dw of the hollow tube of the extractor is larger than Dc in a natural state; and under the state of compression and contraction, the hollow tube of the object taking device and the maximum peripheral diameter Ds of the specimen bag contained by the hollow tube are smaller than Dc. Thereby ensuring that the specimen bag is packed and stored in a loose state and can enter the body of the patient through the puncture channel. The specimen bag of the present invention is also removed from the hollow tube in a manner that is distinct and is pulled from the hollow tube by a one-way pull-out or two-way pull-out method rather than a push-out method. In a specific design scheme, Dw is larger than 11mm and Dz is larger than Ds, and the extractor 100 conforming to the size relation enters the body of a patient through a puncture channel 91 with the specification of 10mm (as shown in figure 8). The extractor 10 also has one drawback, which is that the distal tube portion of the extractor is not sufficiently guided to be conveniently retracted into the puncture channel having a smaller diameter than the hollow tube.

In yet another aspect of the present invention, an improved distal tube portion is provided to increase the guidance of the distal tube portion to facilitate the easy and quick insertion of the extractor into the puncture device channel, and to facilitate the collapsing of the hollow tube, so that the extractor can be pulled into the puncture device channel and then into the patient with a lower pulling force.

FIGS. 9-10 depict a modified distal tube portion 210a comprising an arcuate length L1a extending distally from the main tube wall 201, an elongate strip 211a having a width 1a, and an angled nozzle 215a connecting the elongate strip and the main tube wall. From a transverse perspective, the angled nozzle forms an obtuse angle ANG1 with the elongate strip. In an optimized design scheme, ANG1 is more than or equal to 145 degrees and less than or equal to 165 degrees, and when the ANG1 is less than 145 degrees, the guide effect of the inclined nozzle is not good enough, so that the extractor is not favorable for being pulled into the puncture channel. When it is more than 165 °, the transition region is too long and the operation is not convenient. In one scheme, the elongated strip and the inclined nozzle are formed by cutting off partial pipe wall materials of the main pipe wall, and in one design, B1a is smaller than the inner diameter of the puncture channel which penetrates through the elongated strip and the inclined nozzle, and in a specific scheme, B1a is smaller than or equal to 10 mm. The length L1a of the long strip is longer than the puncture outfit, in the concrete scheme, L1a is larger than or equal to 150 mm.

FIGS. 11-12 depict yet another modified distal tube portion 210b comprising an arcuate length L1b extending distally from the main tube wall 201, two elongate strips 211b having a width 1b, and two angled nozzles 215b connecting the elongate strips and the main tube wall. From a transverse perspective, the angled nozzle forms an obtuse angle ANG1 with the elongate strip. In an optimized design scheme, ANG1 is more than or equal to 145 degrees and less than or equal to 165 degrees, and when the ANG1 is less than 145 degrees, the guide effect of the inclined nozzle is not good enough, so that the extractor is not favorable for being pulled into the puncture channel. When it is more than 165 °, the transition region is too long and the operation is not convenient. In one scheme, the elongated strip and the inclined nozzle are formed by cutting off partial pipe wall materials of the main pipe wall, and in one design, B1B is smaller than the inner diameter of the puncture channel which penetrates through the elongated strip and the inclined nozzle, and in a specific scheme, B1B is smaller than or equal to 10 mm. The length L1a of the long strip is longer than the puncture outfit, in the concrete scheme, L1b is larger than or equal to 150 mm. While fig. 11-12 depict two elongated strips 211b and two angled nozzles 215b as being symmetrical, the design may be asymmetrical. Preferably, the two elongated strips 211b should be designed to have a symmetrical structure to facilitate cutting. The angled nozzles are then preferably designed in an asymmetrical configuration, as shown in fig. 13, with the first angled nozzle 215b and the second angled nozzle 216b staggered in the axial direction, which further facilitates the collapsing deformation of the transition region of the hollow tube pulling the extractor into the puncture channel.

In yet another aspect of the invention, an improved proximal tube portion includes a closed or semi-closed structure to prevent the specimen bag from being squeezed out when a transurethral device is pulled into a patient through a puncture channel. 14-16 depict an improved proximal tube portion 250a comprising a first strap 251a and a second strap 253a extending proximally from the main tube wall 201, the first and second straps forming a heat seal seam 255 a. The width of the first and second flaps tapers from the distal end to the proximal end such that the width B2a of the heat seal weld 255a is less than the inner diameter of the puncture channel therethrough, in one particular design, B2a < 10 mm. There are at least two methods of manufacturing the proximal tube portion 250a, method 1: flattening the wall of the main pipe, carrying out heat seal welding to form a long heat seal welding line, and then trimming two sharp corners of the long heat seal welding line to ensure that the width of the heat seal welding line and the adjacent area is less than 10 mm. The method 2 comprises the following steps: the main tube wall is first cut to form a first and second overlapping flap, and then the first and second overlapping flaps are heat-sealed and welded to form a heat-sealing weld 255 a.

FIG. 17 depicts a modified proximal tube portion 250B containing a ligation coil 251B, wherein the ligation coil 251B provides a ligation coil and its adjacent area with a cannulation having a diameter B2B of less than 10 mm. In yet another version, the ligation coil 251B is such that the diameter B2B of the ligation coil and its adjacent area is less than 5mm or nearly closed.

Fig. 18-19 depict yet another modified proximal tube portion 250c, the proximal tube portion 250c containing 2 transverse cuts 251c and an elastic loop 255c, the elastic loop 255c being positioned in both transverse cuts, the maximum outer circumferential diameter of the elastic loop being < 10mm, such that the diameter B2c of the hollow tube in the vicinity of the elastic loop is less than 10 mm. In yet another alternative, the diameter B2c of the elastic loop and its adjacent area is less than 5 mm.

Fig. 20-21 depict a modified intermediate tube portion 230 a. The intermediate tube portion 230a also includes a plurality of transverse slots 231 a. The transverse slots 231a are spaced apart from each other in the axial direction to form row-shaped transverse slots 232 a. Two adjacent transverse cuts in the axial direction define the transverse rib 233 a. In the circumferential view, the transverse cutting grooves 231a are circumferentially and uniformly distributed around the periphery of the middle pipe part by taking the axis as an array center to form an even number of row-shaped transverse cutting grooves 232 a. Two adjacent rows of transverse slits define an axial rib 235 a. In this example, 4 rows of transverse cuts are formed in the outer periphery of the intermediate tube portion. The outer periphery of the intermediate pipe portion is formed with an even number of rows of transverse slits, mainly for convenience of manufacture. In one embodiment, the width of the axial rib is greater than the width of the transverse rib. During specific design, the width of the axial rib is more than 3 times of the width of the transverse rib, and the strength of the axial rib is far greater than that of the transverse rib.

Fig. 22-23 depict yet another modified intermediate tube portion 230 b. The intermediate tube portion 230b includes a plurality of transverse slots 231 a. The transverse slots 231a are spaced apart from each other in the axial direction to form a row of transverse slots. The plurality of transverse slots form a first row of transverse slots, a second row of transverse slots, a third row of transverse slots, and a fourth row of transverse slots in sequence about the periphery of the intermediate tube portion. The first and third rows of transverse slits are symmetrical about the axis, and the second and fourth rows of transverse slits are symmetrical about the axis. Two adjacent transverse slits in the axial direction define a transverse rib 233b and, viewed circumferentially, two adjacent row-like transverse slits define an axial rib 235 a. As shown in fig. 23, two adjacent rows of transverse slits of the intermediate tube portion 230b are offset in the axial direction, and the transverse ribs formed are not aligned. Any virtual section perpendicular to the axis is intersected with the middle pipe part, and the intersection line is a multi-section line and does not form a complete ring.

Fig. 24-25 depict yet another modified intermediate tube portion 230 c. The intermediate tube portion 230c includes a plurality of intercostal slots 231c, ribs 235c and axial ribs 237 c. The intercostal slots 231c form an angle ANG2 with the axis of the intermediate tube portion in the proximal direction, preferably 25 DEG-45 DEG ANG 2. The intercostal slots 231c are spaced apart along the axis from the axis, with a portion of the main tube wall material being cut away, with each two adjacent intercostal slots 231c defining a cantilevered rib 235c, with the plurality of intercostal slots forming 1 row of intercostal slots along the axis. From an axial perspective, the two rows of intercostal slots cut through the main wall of the intermediate tubular portion 230c twice, each row having a transverse depth of cut less than the radius of the intermediate tubular portion, thereby forming two axial ribs 237c connecting all of the ribs 235 c. As shown in fig. 24-25, the intercostal notch 231c, rib 235c and axial rib 237c form a fishbone-shaped structure, with the cantilevered end of the rib inclined distally to proximally to facilitate the collapsing deformation of the middle tube portion when the extractor is pulled into the puncture channel. Referring to FIG. 26, a further modified version of the intermediate tube portion 230d is similar in construction and composition to the intermediate tube portion 230c, except primarily for the intercostal slots 231c of the intermediate tube portion 230c, with the ribs 235c being axially symmetric. The intermediate tube portion 230d, intercostal slots 231d, and ribs 235d shown in FIG. 26 are not symmetrical about the axis, forming a staggered configuration. Further reduction of the axial contraction force is facilitated.

The foregoing describes a number of preferred versions of the distal, intermediate and proximal tube portions that can be interchangeably combined to form different solutions to achieve various advantages.

In conjunction with fig. 9, 22 and 27. A hollow tube 200a includes a distal tube portion 210a, an intermediate tube portion 230b and a proximal tube portion 250 a. The extractor 10a is constituted by a hollow tube 200a instead of the hollow tube 200. Namely, a medical specimen sampler 10a comprising the specimen bag 100, a binding thread 50 and a hollow tube 200a, wherein the specimen bag 100 is accommodated in the middle tube part 230b of the hollow tube in a loose state in a rolled state. Referring to fig. 27, an extractor product bag 1a comprises an extractor 10a and a sterilization packaging bag 800, wherein the extractor 10a is packaged in the sterilization packaging bag 800 and is provided for clinical application after sterilization.

In one aspect of the invention, a method of manufacturing a extractor product package 1a is provided, comprising the steps of:

s1, extruding a pipe with a proper diameter and a proper wall thickness by using proper raw materials and cutting the pipe to a proper length;

s2, cutting the slender strip and the inclined nozzle to form the far-end tube part;

s3, cutting a first overlapping edge and a second overlapping edge which form the near-end tube part;

s4, welding to form a heat seal welding seam of the near-end pipe part;

s5: the first blanking forms a first and a third row of transverse cutting grooves, and the second blanking forms a second and a fourth row of transverse cutting grooves;

s6, the specimen bag and the binding wire are curled and put into the middle tube part;

s7, putting the extractor into a sterilized packaging bag and sealing the bag;

s8: sterilizing with ethylene oxide or irradiation.

In one aspect of the invention, a method of using a extractor product package 1a is provided, comprising the steps of:

s1, tearing the sterilizing packaging bag open, taking out the object taking device in a sterile mode;

s2, inserting the distal tube part of the object taking device into the body of the patient through a first puncture device channel arranged on the abdominal wall of the patient, and exposing the proximal tube part outside the puncture device;

s3, inserting the endoscope grasping forceps into the patient body through the second puncture outfit channel, grasping the distal tube part to the patient body and pulling the middle tube part into the patient body through the first puncture outfit channel;

and S4, pulling the object taking bag out of the middle pipe part by using a pair of endoscope grasping forceps.

In combination with the above, the fetching bag bundle packaged by the fetching device 10a is in a fluffy state, so that the reaction force to the wall of the hollow tube is small, and therefore, the transverse ribs can be designed to be weak, so that the material, the wall thickness, the cutting groove width and the length of the middle tube part can be reasonably selected, and the fetching bag can be accommodated in the middle tube part in the manner of the fluffy state sample bag bundle without being automatically extruded from the first, second, third and fourth rows of transverse cutting grooves. The length dimension L2 of the intermediate tube portion is substantially equal to the length L of the sample bag roll. Thereby conveniently adopt the easy with of the mouth part of distal end of endoscope nipper the sample bag is pulled out from middle tube portion. The length La1 of the elongate strip 211a may be designed to be long to facilitate passage through the penetrator channel. Since the hollow tube has sufficient flexibility to be bent and folded at will, the elongate strip 211a can also be bent and folded at will, and when pulled into the patient, can be bent and folded at will without causing adverse effects. In addition, as shown in fig. 27, the elongate tape wrap-around package can reduce the packaging volume of the product package 1a, saving sterilization, storage and transportation costs.

In conjunction with fig. 7, fig. 11 and fig. 24. A hollow tube 200b includes a distal tube portion 210b, an intermediate tube portion 230c and a proximal tube portion 250. The extractor 10b is constituted by a hollow tube 200b instead of the hollow tube 200 a. Namely, a medical specimen sampler 10b comprising the specimen bag 100, a binding thread 50 and a hollow tube 200b, wherein the specimen bag 100 is accommodated in the middle tube part 230c of the hollow tube in a loose state in a rolled state. An extractor product bag 1b (not shown in the figure) comprises an extractor 10b and further comprises a sterilization packaging bag 800, wherein the extractor 10b is packaged in the sterilization packaging bag 800 and is provided for clinical application after being sterilized.

In one aspect of the present invention, a method of manufacturing a extractor product package 1b is presented, comprising the steps of:

s1, extruding a pipe with a proper diameter and a proper wall thickness by using proper raw materials and cutting the pipe to a proper length;

s2, cutting the slender strip and the inclined nozzle to form the far-end tube part;

s3, punching the middle tube part of the fishbone structure at one time;

s4, the specimen bag and the binding wire are curled and put into the middle tube part;

s5, putting the extractor into a sterilized packaging bag and sealing the bag;

s6: sterilizing with ethylene oxide or irradiation.

In one aspect of the invention, a method of using a dispenser package 1b is provided, comprising the steps of:

s1, tearing the sterilizing packaging bag open, taking out the object taking device in a sterile mode;

s2, inserting the distal tube part of the object taking device into the body of the patient through a first puncture device channel arranged on the abdominal wall of the patient, and exposing the proximal tube part outside the puncture device;

s3, inserting the endoscope grasping forceps into the patient body through the second puncture outfit channel, grasping the distal tube part to the patient body and pulling the middle tube part into the patient body through the first puncture outfit channel;

s4, the fetching bag is pulled out from the middle tube part through the proximal tube part by the endoscope grasping forceps.

In conjunction with the foregoing, the bundle of fetching bags packed by the fetching device 10b is in a fluffy state, so that the reaction force to the hollow tube wall is small. When the grasping device 10b is pulled by the grasping forceps to enter the puncture channel, the intercostal cutting slots 231c, the ribs 235c and the axial ribs 237c form a fishbone-shaped structure, the cantilever ends of the ribs are inclined from the far end to the near end, so that the contraction deformation of the middle tube part when the grasping device is pulled into the puncture channel is facilitated, and meanwhile, the contraction deformation of the ribs can prevent the relative sliding of the specimen bag, so that the near tube part does not need to adopt a closed structure or a structure which is closed. After the fetching device is completely pulled into the body, the specimen bag can be easily pulled out from the near-end tube part.

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 specimen bag and the specimen bag product package of the invention well solve the problems that when a single specimen bag is clinically applied, the single specimen bag is difficult to put into a patient body through a puncture outfit channel, and the single specimen 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, so that the single specimen bag is accidentally broken and the like. It should be understood by those skilled in the art that when the specimen bag is successfully introduced into the patient and released out of the hollow tube, the subsequent operation of the specimen bag for receiving 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 (9)

1. A medical object fetching device in a loose state comprises an object fetching bag, wherein the object fetching 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 bag further comprises a binding wire, the far end of the binding wire comprises a sliding joint, the far end of the binding wire penetrates through the tunnel, the near end of the binding wire penetrates through the sliding joint, and a binding wire ring with the size approximately the same as that of the bag opening is formed, and the bag is characterized in that:

1) the object taking device also comprises a flexible hollow tube, and the hollow tube comprises a far-end tube part, a middle tube part, a near-end tube part and an axis;

2) the specimen bag is crimped or folded to be received in a hollow tube.

2. The extractor of claim 1, wherein: the sample bag is curled or folded to form a wrapped state sample bag roll and a loose state sample bag roll, and the diameter of the circumscribed circle at the thickest position of the wrapped state sample bag roll is Dj; the inner diameter Dz of the hollow tube is more than or equal to 1.5Dj, so that the specimen bag is accommodated in the hollow tube in a loose state of the specimen bag roll.

3. The extractor of claim 1, wherein: the object fetching device enters the body of a patient through a puncture channel with the inner diameter Dc, and the outer diameter Dw of the hollow tube of the object fetching device is larger than Dc in a natural state; and under the state of compression and contraction, the hollow tube of the object taking device and the maximum peripheral diameter Ds of the specimen bag contained by the hollow tube are smaller than Dc.

4. The extractor of claim 3, wherein: the distal tube portion comprising an arcuate elongate strip of length L1a and width 1a extending distally from the tube wall thereof and an angled nozzle connecting the elongate strip and the tube wall; from a transverse perspective, the angled nozzle forms an obtuse angle ANG1 with the elongate strip.

5. The extractor of claim 4, wherein: the middle pipe part comprises a plurality of transverse cutting grooves, and the transverse cutting grooves are distributed at intervals along the axial direction to form row-shaped transverse cutting grooves; the plurality of transverse slots form a first row of transverse slots, a second row of transverse slots, a third row of transverse slots, and a fourth row of transverse slots in sequence about the periphery of the intermediate tube portion.

6. The extractor of claim 5, wherein: the first and third rows of transverse slits are symmetrical with respect to the axis, and the second and fourth rows of transverse slits are symmetrical with respect to the axis; two adjacent transverse cutting grooves in the axial direction define a transverse rib, and an axial rib is defined by the two adjacent row-shaped transverse cutting grooves at the circumferential view angle; the annular visual angle is that two adjacent rows of transverse cutting grooves of the middle pipe part are distributed in a staggered mode in the axis direction, and formed transverse ribs are not aligned; any virtual section perpendicular to the axis is intersected with the middle pipe part, and the intersection line is a multi-section line and does not form a complete ring.

7. The extractor of claim 5, wherein: the proximal tube portion includes a first strap and a second strap extending proximally from the tube wall, the first and second straps forming a heat seal weld.

8. An extractor product package comprising the extractor of claim 7, further comprising a sterile package, wherein the extractor is packaged in the sterile package and sterilized for clinical use.

9. A method of manufacturing the extractor product pack of claim 8, comprising the steps of;

s1, extruding a pipe with a proper diameter and a proper wall thickness by using proper raw materials and cutting the pipe to a proper length;

s2, cutting the slender strip and the inclined nozzle to form the far-end tube part;

s3, cutting a first overlapping edge and a second overlapping edge which form the near-end tube part;

s4, welding to form a heat seal welding seam of the near-end pipe part;

s5: the first blanking forms a first and a third row of transverse cutting grooves, and the second blanking forms a second and a fourth row of transverse cutting grooves;

s6, the specimen bag and the binding wire are curled and put into the middle tube part;

s7, putting the extractor into a sterilized packaging bag and sealing the bag;

s8: sterilizing with ethylene oxide or irradiation.

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