CN114191044A

CN114191044A - Ligation device rubber ring loading device with ultra-smooth coating and manufacturing method

Info

Publication number: CN114191044A
Application number: CN202111586581.8A
Authority: CN
Inventors: 张海军; 卢天恒; 袁坤山; 赵彦伟; 刘凯; 王卫
Original assignee: Shandong Branden Medical Devices Co Ltd
Current assignee: Shandong Branden Medical Devices Co Ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-03-18
Anticipated expiration: 2041-12-23
Also published as: CN114191044B

Abstract

The invention discloses a ligation device rubber ring-closing device with an ultra-smooth coating and a manufacturing method thereof. The invention relates to a loop fastening device, which utilizes the metal memory function of a metal hook of the loop fastening device in the loop fastening process, and achieves the purpose of expanding a rubber loop and a loop of a loop fastening device by automatically restoring the original deformation characteristic of the metal hook and pushing and pulling an outer cylinder. The metal hook on the upper ring is provided with the ultra-smooth coating, so that the friction between the rubber ring and the upper ring device is effectively reduced, the upper ring is more convenient, and the possibility that the rubber ring is scratched is avoided. The invention enables the operation of the upper ring of the ligation device to be more convenient and labor-saving, has obvious beneficial effects and is convenient to popularize and apply.

Description

Ligation device rubber ring loading device with ultra-smooth coating and manufacturing method

Technical Field

The invention belongs to the field of medical auxiliary instruments, and particularly relates to a ligation device rubber ring coiling device with an ultra-smooth coating and a manufacturing method thereof.

Background

The existing hemorrhoids treatment, especially the internal hemorrhoids treatment, mostly adopts a surgical excision method, the method has high cost, the wound surface is large after the operation, the pain of a patient is increased, and the psychological burden of the patient is increased. To overcome the above problems, hemorrhoid ligators have been used clinically. The hemorrhoid ligation device sucks the focus tissue of the hemorrhoid by negative pressure, and then the focus tissue of the hemorrhoid is ligated by using the rubber ring, the tissue under the rubber ring is gradually necrotized and dropped due to the lack of nutrient substances caused by the lack of blood circulation, and is discharged out of the body through excrement. At present, a rubber ring on a ligation device is tied to the tip of a ligation device guider in a manual mode or through an expansion forceps in a sleeving manner, and the ligation device is sleeved with the rubber ring through the guide tip.

Chinese patent CN 104323814B introduces a push expanding ring applicator, including outer barrel and piston rod, push the piston rod and can make it remove in outer barrel, evenly be fixed with a plurality of ring expansion steel wires all around of outer barrel front end, the front end of piston rod is fixed with expands the dish, expand the dish and be located the inside that all ring expansion steel wires formed the cage, the front end that expands the dish holds the chamber for with sucking disc matched with, it is provided with a plurality of ring pushing plates that are used for pushing away the rubber ring from ring expansion steel wire to the sucking disc to hold the chamber all around, it forms the breach that the ring expansion steel wire of being convenient for passes through to push between the ring pushing plates, at last circle in-process, the operation of similar injection needle tube, can expand the ligator rubber ring, reach the mesh of putting the circle, easy operation, the device has utilized the wire firm, non-deformable's characteristic, use to expand the dish as the fulcrum through the thick stick, expand the rubber ring through lever principle, push the rubber ring.

The rubber ring is expanded by restoring the original deformation capacity without being affected by external force by utilizing the memory function of the memory alloy, then the outer cylinder is matched with the upper ring, and the metal hook of the upper ring of the ring feeding device is provided with the ultra-smooth coating, so that the friction force between the rubber ring and the ring feeding device can be further reduced, and the service life of the rubber ring is further protected and prolonged.

Disclosure of Invention

The invention aims to overcome the defects and provides the rubber ring binding device of the ligation device with the ultra-smooth coating and the manufacturing method thereof, so that the rubber ring can be easily bound on the ligation device without manual ligation of the rubber ring by medical personnel.

The ring mounting device of the invention consists of an inner cylinder and an outer cylinder; the head end of the inner cylinder is provided with an upper ring metal hook, the metal hook is made of memory alloy materials, the metal hook is firstly folded outwards on a plane perpendicular to the cylinder wall, a certain angle is formed between the metal hook and the cylinder body, the metal hook is then folded inwards to form an outwards protruded shape, the metal hook is then folded outwards or folded inwards to form an outwards horn-shaped or inwards contracted shape, the tip end of the metal hook is outwards inclined, the metal hook is provided with a super-slip coating, positioning support columns are distributed on the plane perpendicular to the cylinder wall of the inner cylinder side wall, cross columns are connected among the positioning support columns to form a handle, the part, extending out of the support column, of the tail end of the inner cylinder is a hand guard, the top of the support column, close to the upper ring metal hook, the symmetrical part of the cylinder body of the outer cylinder is provided with positioning grooves, and the support column is positioned in the positioning grooves.

Furthermore, the number of the metal hooks of the ring mounting device is 3-9, the outward protruding shape can be sharp and smooth, the angle between the metal hooks and the inner cylinder body is 10-60 degrees, the tip of the metal hooks inclines outwards, the angle is 0-30 degrees, and the materials of the metal hooks include but are not limited to metal memory alloys such as titanium nickel copper, titanium nickel iron, titanium nickel chromium, copper nickel series alloy, copper aluminum series alloy, copper zinc series alloy, iron series alloy and the like.

Furthermore, the positioning pillars of the ring mounting device are longitudinally arranged on the surface perpendicular to the cylinder body on the outer wall of the inner cylinder, the angle between the pillars and the cylinder wall is 30-90 degrees, the adjacent pillars in the same longitudinal column form a triangular stable framework according to the extending direction, the pillars are in the shapes of long strips, arcs, stars, circles, columns and other regular or irregular shapes, the number of the pillars can be 0, the positioning pillars are connected by cross pillars to form handles, the number of the handles is 0-5, and the finger rings at the top ends of the pillars close to the upper ring metal hooks are in the shapes of triangles, circles, clouds and other regular or irregular rings.

Further, go up circle ware urceolus stack shell constant head tank, by vertical groove and transverse groove constitution, the transverse groove is evenly arranged on vertical groove, and vertical groove and transverse groove crossing angle are 30 ° -90 °, and the transverse groove quantity of every constant head tank is greater than the pillar quantity that forms the hand protector, and the quantity of constant head tank can be 0, and the constant head tank is axial symmetry or central symmetry mode and arranges at outer section of thick bamboo stack shell.

Further, the mass fraction ratio of the ultra-smooth coating solution is that the polyvinyl pyrrolidone: polyethylene glycol: water = 1: (2-10): 100, immersing the metal hook on the inner cylinder into the polyvinylpyrrolidone and polyethylene glycol aqueous solution for 3-5min, drying in an oven (60-90) DEG C for (30-60) min.

Further, the preparation method of the ring mounting device comprises the following steps:

s1: the memory metal pipe is cut into the basic shape of the metal wire on the inner cylinder and the positioning groove (if any) of the outer cylinder by a laser cutting machine, and the positioning pillar (if any) and the transverse pillar (if any) are formed by plastic injection molding or metal welding.

S2: and placing the inner barrel upper ring metal wire into a die, temporarily fixing the inner barrel upper ring metal wire into the final shape of the upper ring metal wire, and placing the inner barrel upper ring metal wire into a muffle furnace for high stability.

S3: the inner through is inserted into the outer cylinder, and the positioning support (if any), the handle (if any) and the finger ring (if any) are arranged.

S4: preparing a super-smooth solution, soaking the upper ring of metal wires, and drying to prepare the super-smooth coating.

The technical scheme provided by the invention has the following beneficial effects:

(1) the positioning pillars of the ring feeding device are connected by the cross pillars to form a handle, the part of the pillar at the tail end of the inner cylinder, which exceeds the handle, is a hand guard, and the head end is a finger ring, so that the fixing and gripping performance of the ring feeding device is improved.

(2) The angle between the inner cylinder support and the cylinder wall of the upper ring device is 30-90 degrees, adjacent supports in the same column form a triangular stable framework with transverse columns according to the extending direction of the supports, and the triangle has stability and can better support a handle.

(3) Go up circle ware urceolus stack barrel body constant head tank, by vertical groove and transverse groove constitution, the transverse groove is evenly arranged on vertical groove, and vertical groove and transverse groove cross angle are 30-90, and there is certain contained angle by vertical groove and transverse groove of constant head tank, can get into the degree of opening of shrink of constant head tank transverse groove through the control reference column more meticulous control circle ware metal hook.

(4) The metal hook is made of memory alloy material, the metal hook is firstly folded outwards on a plane vertical to the cylinder wall, a certain angle is formed between the metal hook and the cylinder body, the metal hook is folded inwards to form an outwards protruding shape, then the metal hook is folded outwards or inwards to form an outwards flared shape or an inwards contracted shape, a handle of the inner cylinder is held, the head end of the inner cylinder pushes the outer cylinder, the outer cylinder extrudes the outwards protruding part of the metal hook, the metal hook starts to polymerize and gather in a conical shape, the metal hook conveniently penetrates through the ligation rubber ring, the outer cylinder is pulled towards the tail end of the inner cylinder, the outer cylinder is separated from the protruding part, the metal hook is not bound by the outer cylinder, the metal hook is restored to the original shape according to the function of the memory alloy, the metal hook is opened towards the periphery, the rubber ring is expanded, the head end of the ligation rubber ring is placed in the middle of the metal hook, the outer cylinder is pushed to the head end of the ligation device, and the ring loading operation is completed.

(5) The metal hook has the super-smooth coating, can effectively reduce the friction between rubber ring and the ring loading ware, makes the ring loading operation more convenient laborsaving.

(6) The tip of the metal hook inclines outwards, and the angle is 0-30 degrees, so that the purpose of fixing the rubber ring can be achieved, and the rubber ring is prevented from being separated and bouncing off in the ring mounting process during expansion.

Description of the drawings:

in order to more clearly explain the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic view of the whole loop forming device of the ligation device;

FIG. 2 is a schematic view of an inner cylinder of the looper;

FIG. 3 is a schematic view of the outer cylinder of the ring mounting device;

in the figure: 1-outer cylinder, 2-inner cylinder, 3-support, 4-handle, 5-hand guard, 6-finger ring, 7-metal hook, 8-metal hook and inner cylinder head end contact protrusion, 9-metal hook tip, 10-positioning groove, 11-transverse groove and 12-longitudinal groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be described in detail and fully with reference to the accompanying drawings. It is to be understood that the described embodiments are only a few embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. The invention belongs to the protection scope based on the embodiments of the invention.

The following further describes embodiments of the present invention with reference to fig. 1-3: holding the handle 4 of the inner cylinder 2 by one hand, inserting the index finger of the hand into the finger ring 6, immersing the upper ring of metal wire into physiological saline for 3s-5s, wetting the ultra-smooth coating, pushing the outer cylinder 1 in the figure 1 along the direction of the longitudinal groove 12 of the positioning groove 10 by the other hand, pressing the metal hook of the metal hook 7 by the outer cylinder 1 to the protrusion 8 contacted with the head end of the inner cylinder, shrinking the metal hook inwards, gathering, screwing the inner cylinder support 3 into the transverse groove 11 of the positioning groove 10 of the outer cylinder, sleeving the rubber ring into the metal hook tip 9 when the distance between the metal hook tips 9 is minimum, screwing out the inner cylinder support 3, returning the outer cylinder 1 along the direction of the longitudinal groove 12, returning the upper ring of metal wire to the original shape, expanding the rubber ring, placing the head end of the rubber ring required to be placed into the center of the expanded upper ring of the metal wire by the ligation device, pushing the outer cylinder 1 in the direction of the longitudinal groove 12 of the positioning groove 10, and pushing the rubber ring to the ligation device, and finishing the ring feeding process.

Example 1

Using a nickel-titanium alloy metal tube (the inner diameter is 1.5cm, the wall thickness is 1.5 mm) as an inner tube, cutting 3 upper ring metal hooks by a laser cutting machine, after cutting, not considering the length of the upper ring metal hooks, namely the length of the inner tube barrel is 15 cm, placing the inner tube into a mold for temporary shaping, inclining the tip end of each metal hook by 10 degrees outwards, placing the inner tube into a muffle furnace, heating to 850 ℃, heating for 10min, taking out, placing the inner tube into water, and cooling.

A nickel-titanium alloy metal tube (with the inner diameter of 1.7cm and the wall thickness of 1.5 mm) is used as an outer tube, and a section of 10 cm long is cut by a laser cutting machine and used as an outer tube.

The mass ratio of polyvinylpyrrolidone: polyethylene glycol: water = 1: 2: 100 preparing a super-smooth coating solution, immersing the upper ring of the inner cylinder into the solution for 3min, and drying in an oven at 60 ℃ for 30 min.

The inner tube is inserted into the outer tube to make the simplest upper ring device.

Example 2

The method comprises the following steps of taking a nickel-titanium alloy metal tube (the inner diameter is 1.5cm, the wall thickness is 1.5 mm) as an inner tube, cutting 6 upper-ring metal hooks by a laser cutting machine, after cutting, not considering the length of an inner tube body of the upper-ring metal hooks to be 15 cm, placing the inner tube into a mold for temporary shaping, placing the inner tube into a muffle furnace, inclining the tip end of each metal hook outwards at an angle of 15 degrees, heating to 850 ℃, heating for 10min, taking out, and placing into water for cooling.

A nickel-titanium alloy metal tube (with the inner diameter of 1.7cm and the wall thickness of 1.5 mm) is used as an outer tube, a laser cutting machine is used for cutting a 10 cm long section as an outer tube, 2 positioning grooves are cut, and the included angle between each transverse groove and each longitudinal groove is 45 degrees.

The inner pipe is inserted into the outer pipe, the inner wall positioning support is fixed along the longitudinal groove of the positioning groove, the angle between the support and the cylinder wall is 30-90 degrees, the number of the handles is 2, and the finger ring at the top end of the support close to the upper ring of the metal hook is triangular.

The mass ratio of polyvinylpyrrolidone: polyethylene glycol: water = 1: 6: 100 preparing a super-smooth coating solution, immersing the upper ring of the inner cylinder into the solution for 4min, and drying in an oven at 75 ℃ for 45 min.

Embodiment 3

The nickel-titanium alloy metal tube (the inner diameter is 1.5cm, the wall thickness is 1.5 mm) is used as an inner tube, 9 upper-ring metal hooks are cut out by a laser cutting machine, after cutting, the length of an inner tube body without considering the length of the upper-ring metal hooks is 15 cm, the inner tube is placed into a die for temporary shaping, the tip end of each metal hook inclines outwards, the angle is 30 degrees, the inner tube is placed into a muffle furnace, the heating is carried out at 850 ℃ for 10min, and the inner tube is taken out and placed into water for cooling.

A nickel-titanium alloy metal tube (with the inner diameter of 1.7cm and the wall thickness of 1.5 mm) is used as an outer tube, a laser cutting machine is used for cutting a section of 10 cm in length to be used as an outer tube, 5 positioning grooves are cut, and the included angle between each transverse groove and each longitudinal groove is 90 degrees.

The inner pipe is inserted into the outer pipe, the inner wall positioning support is fixed along the longitudinal groove of the positioning groove, the angle between the support and the cylinder wall is 30-90 degrees, the number of the handles is 5, and the finger ring at the top end of the support close to the upper ring of the metal hook is circular.

The mass ratio of polyvinylpyrrolidone: polyethylene glycol: water = 1: 10: 100 preparing a super-smooth solution, immersing the metal hook on the upper ring of the inner cylinder into the solution for 5min, and drying in an oven at 90 ℃ for 60 min.

Comparative example 1

Taking a nickel-titanium alloy metal tube (with the inner diameter of 1.5cm and the wall thickness of 1.5 mm) as an inner tube, cutting 12 upper-ring metal hooks by a laser cutting machine, after cutting, not considering the length of the upper-ring metal hooks, namely the length of an inner tube barrel body of 15 cm, putting the inner tube into a mold for temporary shaping, inclining the tip end of each metal hook outwards at an angle of 0 degree, putting the inner tube into a muffle furnace, heating to 850 ℃, heating for 10min, taking out, putting the inner tube into water, and cooling.

A nickel-titanium alloy metal tube (with the inner diameter of 1.7cm and the wall thickness of 1.5 mm) is used as an outer tube, a laser cutting machine is used for cutting a section of 10 cm long as an outer tube, 7 positioning grooves are cut, and the included angle between each transverse groove and each longitudinal groove is 90 degrees.

The inner pipe is inserted into the outer pipe, the inner wall positioning support is fixed along the longitudinal groove of the positioning groove, the angle between the support and the cylinder wall is 30-90 degrees, the number of the handles is 7, and the finger ring at the top end of the support close to the upper ring of the metal hook is circular.

The mass ratio of polyvinylpyrrolidone: polyethylene glycol: water = 1: 1: 100 preparing a super-smooth solution, immersing the metal hook on the upper ring of the inner cylinder into the solution for 1min, and drying in an oven at 45 ℃ for 60 min.

Comparative example 2

Taking a nickel-titanium alloy metal tube (with the inner diameter of 1.5cm and the wall thickness of 1.5 mm) as an inner tube, cutting 12 upper-ring metal hooks by a laser cutting machine, after cutting, not considering the length of the upper-ring metal hooks, namely the length of an inner tube barrel body of 15 cm, putting the inner tube into a mold for temporary shaping, inclining the tip end of each metal hook outwards at an angle of 40 degrees, putting the inner tube into a muffle furnace, heating to 850 ℃, heating for 10min, taking out, putting the inner tube into water, and cooling.

The inner pipe is inserted into the outer pipe, the inner wall positioning support is fixed along the longitudinal groove of the positioning groove, the angle between the support and the cylinder wall is 30-90 degrees, the number of the handles is 7, and the finger ring at the top end of the support close to the upper ring of the metal hook is cloud-shaped.

The mass ratio of polyvinylpyrrolidone: polyethylene glycol: water = 1: 12: 100, preparing a super-smooth solution, immersing the upper ring of the inner cylinder into the solution for 10min, and drying in an oven at 45 ℃ for 60 min.

(1) The loopers of the above specific examples were each dropped from a height of 50cm, and the coating condition was observed

(2) The metal hook of the loop attaching device in the specific example is respectively immersed into the physiological saline for 3s, 10 rubber loops with the same specification and model are taken, loop attaching operation is carried out for 10 times, each rubber loop only has one loop attaching opportunity, and loop attaching effect is checked.

Table 1 verification of the effects

Verifying items	Example 1	Example 2	Embodiment 3	Comparative example 1	Comparative example 2
						50cm drop	No coating shedding	No coating shedding	No coating shedding	No coating shedding	Coating peeling off
Success rate of upper loop	10/10	10/10	10/10	5/10	10/10
						Time consuming for winding	7min	5min	4min	6min	10min

As can be seen from the above table, embodiments 1-3 have all reached the purpose of complete looping, wherein embodiment 1 has not had the draw-in groove because the structure of the ware of looping is simplest, can't gather together the metal hook of looping to the minimum position of interval accurately, it is long consuming time, and embodiments 2 and 3 have all reached the purpose of swift looping rapidly, comparative example 1 is because the metal hook point of looping leans out, angle 0, some rubber ring is bounced off in the process of looping, because comparative example 1 coating solution concentration is lower, when looping later, the super-slip effect of the metal hook of looping reduces, it is comparatively difficult that the process of looping becomes, it is relatively long consuming time, comparative example 2 is because the metal hook point of looping leans out, angle 40, the process that the rubber ring was laid to the metal hook of looping becomes comparatively difficult, it is long consuming time, later because the coating drops, the comfort of looping reduces.

Claims

1. A ligation device rubber ring loading device with an ultra-smooth coating is characterized in that the ring loading device consists of an inner cylinder and an outer cylinder; the head end of the inner cylinder is provided with an upper ring metal hook which is made of memory alloy material, the metal hook is firstly folded outwards on a plane vertical to the cylinder wall and forms a certain angle with the cylinder body, then the metal hook is folded inwards to form an outwards protruded shape, then the metal hook is folded outwards or inwards to form an outwards flared shape or an inwards contracted shape, the tip end of the metal hook inclines outwards, the metal hook is provided with a super-slip coating, positioning support columns are distributed on the plane of the side wall of the inner cylinder vertical to the cylinder wall, transverse columns are connected among the positioning support columns to form a handle, the part of the support column at the tail end of the inner cylinder, extending out of the handle, is a hand guard, the top of the support column close to the upper ring metal hook is a finger ring, positioning grooves are arranged at the symmetrical part of the cylinder body of the outer cylinder, and the support column is positioned in the positioning grooves.

2. The ligator rubber ring applicator with ultra-smooth coating of claim 1, wherein said metal hooks are 3-9 in number, the outward protruding shape is sharp and smooth, the angle between the metal hooks and the inner cylinder body is 10-60 °, the tip of the metal hooks is inclined outward at an angle of 0-30 °, and the material of the metal hooks includes but is not limited to metal memory alloys such as TiNiCul, TiNiFe, TiNiCr, CuNi series alloys, CuAl series alloys, CuZn series alloys, and Fe series alloys.

3. The ligation device rubber ring looping device with the ultra-smooth coating according to claim 1, wherein the positioning struts are longitudinally arranged on the surface, perpendicular to the barrel body, of the outer wall of the inner barrel, the angle between each strut and the barrel wall is 30-90 degrees, adjacent struts in the same longitudinal row and cross posts form a triangular stable framework according to the extending direction of the struts, the struts are regular or irregular in shape such as long strip, arc, star, circle and column, the number of the struts can be 0, the positioning struts are connected by the cross posts to form handles, the number of the handles is 0-5, and finger rings at the top ends of the struts close to the upper ring metal hooks are regular or irregular in shape such as triangle, circle and cloud.

4. The ligation device rubber ring coiling device with the ultra-smooth coating according to claim 1, wherein the positioning grooves of the outer cylinder body are composed of longitudinal grooves and transverse grooves, the transverse grooves are uniformly arranged on the longitudinal grooves, the crossing angle of the longitudinal grooves and the transverse grooves is 30-90 degrees, the number of the transverse grooves of each positioning groove is larger than that of the pillars forming the hand guard, the number of the positioning grooves can be 0, and the positioning grooves are arranged on the outer cylinder body in an axial symmetry or central symmetry mode.

5. The ligation device rubber ring loading device with the ultra-smooth coating according to claim 1, wherein the ultra-smooth coating is prepared by preparing a mixture of polyvinylpyrrolidone: polyethylene glycol: water = 1: (2-10): 100 water solution, immersing the metal hook on the inner cylinder into the water solution for 3-5min, drying in an oven (60-90) DEG C for (30-60) min.

6. The ligation device rubber ring applicator with the ultra-smooth coating according to claim 1, wherein the preparation method of the applicator comprises the following steps: