CN107684446B - Hemorrhoid ligation cutter - Google Patents
Hemorrhoid ligation cutter Download PDFInfo
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- CN107684446B CN107684446B CN201710905478.2A CN201710905478A CN107684446B CN 107684446 B CN107684446 B CN 107684446B CN 201710905478 A CN201710905478 A CN 201710905478A CN 107684446 B CN107684446 B CN 107684446B
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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
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12009—Implements for ligaturing other than by clamps or clips, e.g. using a loop with a slip knot
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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
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision 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
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
- A61B2017/00398—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids
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Abstract
A hemorrhoid ligation cutter, characterized in that: comprises a shell, a hood, an outer tube, a nail propping seat, a nail bin, a nail pushing sheet, a cutting blade, a blade spring, a limit stop, a stop block supporting seat, a stop block spring, a deflector rod and a driving device; the rear end of the outer tube is connected with the front end of the shell, and the head cover is fixed at the front end of the outer tube; the driving device is arranged in the shell; the nail propping seat is provided with a spiral groove; the front end of the nail pushing piece is in sliding connection with the nail pushing seat, and the nail bin is propped against the nail falling opening; the nail propping seat is provided with a first operation port; the side part of the head cover is provided with a second operation port; the cutting blade is connected with the nail pushing sheet in a sliding way; the limit stop is in sliding connection with the stop support seat; the limit stop is provided with an unlocking hole; the deflector rod is provided with an inclined plane corresponding to the unlocking hole; the driving end of the driving device is connected with the nail pushing sheet, the blade spring and the deflector rod at the same time. The ligature device has high ligature reliability on hemorrhoids and even other tubular tissues, can automatically cut the tissues after ligature, and can continuously ligature and cut for many times.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a hemorrhoid ligation cutter which is mainly suitable for ligating and cutting external hemorrhoid tissues and internal hemorrhoid tissues clinically and also suitable for ligating and cutting partial small blood vessels and tubular tissues (such as a cholecyst tube).
Background
Common methods for hemorrhoid surgical treatment include hemorrhoidectomy, exoincision and anastomotic suprahemorrhoidal cut nailing (PPH), cryohemorrhoid therapy, elastic band ligation hemorrhoid therapy, and the like. The method is suitable for small hemorrhoids, and the special latex is sleeved at the root of the hemorrhoids, so that the hemorrhoids necrosis falls off automatically about 1 week. The whole process of the ligation treatment realizes automation, time saving, labor saving, practicability, simplicity, convenience and rapidness, and effectively controls two symptoms of hemorrhoids, namely bleeding and prolapse. The operation can be completed by one person, and the time consumption is short; the operation is basically painless, hospitalization is not needed, and the price is moderate; the pain is slight and complications are rare. The procedure is therefore widely used in surgery. After the elastic ring is placed in the ligation treatment, the hemorrhoid blocks can only be necrotized and shed after the patient returns home by himself. However, before the hemorrhoid is removed, the elastic ring is likely to be removed, and the ligation performance is unreliable, so that the treatment cannot be achieved. In addition, nerve cells at the anus are dense and abundant, the patient can bear great pain in a period of waiting for the hemorrhoid to fall off for a period of more than one week, and meanwhile, the phenomena that bleeding is not limited after the hemorrhoid necrosis falls off or part of the hemorrhoid of the patient can not fall off, and the like are also caused. For internal hemorrhoids, severed small blood vessels and tubular tissues, there is currently no surgical instrument which is used to thread and ligate the tissue with a ligature pin and then cut with a cutter. Therefore, it is an object of the present invention to design a hemorrhoid ligation cutter which can automatically cut a tissue after ligation and can continuously perform ligation and cutting, and which has high ligation and cutting reliability, by breaking the conventional thinking of the prior art.
Disclosure of Invention
The invention provides a hemorrhoid ligation cutter, which solves the problems that the ligation reliability of an elastic ring is not high in the current hemorrhoid ligation treatment process by using the elastic ring, and the pain is relatively high in the process that a patient waits for the elastic ring to fall off by oneself. The hemorrhoid ligation cutter has reliable ligation performance, can automatically complete cutting after ligation is completed, and can continuously perform ligation cutting.
In order to achieve the above purpose, the technical scheme of the hemorrhoid ligation cutter adopted by the invention is as follows: the hemorrhoid ligation cutter comprises a shell, a hood, an outer tube, a nail propping seat, a nail bin, a nail pushing piece, a cutting blade, a blade spring, a limit stop, a stop supporting seat, a stop spring, a deflector rod and a driving device;
defining one end of the hemorrhoid ligation cutter close to an operator as the front end of the hemorrhoid ligation cutter, and the other end of the hemorrhoid ligation cutter close to the operator as the rear end of the hemorrhoid ligation cutter, wherein the rear end of the outer tube is connected to the front end of the shell in a positioning way, and the head cover is detachably fixed at the front end of the outer tube; the nail pushing piece, the cutting blade, the blade spring, the limit stop, the stop block supporting seat, the stop block spring and the deflector rod are all positioned in the outer tube; the driving device is arranged in the shell;
The main body of the nail pushing seat is a plate body, a first nail pushing guide groove and a second nail pushing guide groove are respectively arranged on two sides of the plate body of the nail pushing seat in the width direction along the direction from the rear end to the front end of the nail pushing seat, each of the first nail pushing guide groove and the second nail pushing guide groove is composed of a straight line section and an arc section, the straight line section of the first nail pushing guide groove is parallel to the straight line section of the second nail pushing guide groove along the length direction of the plate body of the nail pushing seat, and the arc sections of the first nail pushing guide groove and the arc section of the second nail pushing guide groove are both positioned at the front end of the nail pushing seat and are arranged in parallel in the thickness direction of the plate body of the nail pushing seat to form a spiral groove for forming ligature nails; the front ends of the nail pushing pieces are inserted into the inserted sections of the first nail pushing guide grooves and the second nail pushing guide grooves and are in sliding connection with the nail pushing seat, a section, located between the spiral grooves and the inserted sections, of the first nail pushing guide grooves and the second nail pushing guide grooves is used as a nail dropping opening, and the nail bin is abutted against the nail dropping opening; a first operation port for accommodating tissue of an affected part is formed in the plate body of the nail supporting seat and is close to the spiral groove; a second operation port is arranged on the side part of the head cover corresponding to the first operation port of the nail propping seat;
The cutting blade is located on the nail pushing sheet and is in sliding connection with the nail pushing sheet, the cutting blade is a plate body, the front end of the plate body of the cutting blade is provided with a cutter head with a forward cutting edge, the plate body of the cutting blade is provided with a yielding port corresponding to the nail bin and the stop block supporting seat, the nail bin is located in the yielding port, the stop block supporting seat is installed on the yielding port of the cutting blade, and the nail bin is located in front of the stop block supporting seat; the limit stop is in sliding connection with the stop support seat in the direction perpendicular to the plate body of the cutting blade, the end face of the rear end of the yielding port is used as a limit end face, in an assembled state, the limit stop is in contact fit with the limit end face to enable the cutting blade to be positioned relative to the outer tube, one end of the stop spring is abutted against the limit stop, and the other end of the stop spring is abutted against the outer tube; an unlocking hole is formed in the limit stop block; the deflector rod is positioned behind the stop block supporting seat, the deflector rod is a rod body, the rod body is supported on the plate body of the cutting blade along the axial direction of the outer tube, an inclined surface is arranged on the rod body corresponding to the unlocking hole, and the inclined surface can be in contact fit with the unlocking hole;
the driving device is provided with a first driving end, a second driving end and a third driving end; the rear end of the nail pushing sheet is connected with the first driving end; the rear end of the deflector rod is connected with the second driving end; one end of the blade spring is abutted against the third driving end, and the other end of the blade spring is abutted against the rear end of the plate body of the cutting blade;
Under the state of use, the first drive end drives the nail pushing piece to move forward along the axial of outer tube until the nail pushing piece pushes away the ligature nail in the nail storehouse out, simultaneously, the second drive end drives the driving lever slides forward along the axial of outer tube on the cutting blade, the pre-compaction of third drive end blade spring, when the inclined plane on the driving lever slides to unlocking hole department, the driving lever can force limit stop upwards to slide for the dog supporting seat in the direction of the plate body of perpendicular to cutting blade until breaking away from the limit terminal surface, at this moment, the cutting blade slides forward and launches along the axial direction of outer tube on the nail pushing piece.
In order to achieve the above purpose, the technical scheme of the second hemorrhoid ligation cutter adopted by the invention is as follows: the hemorrhoid ligation cutter comprises a shell, a hood, an outer tube, a nail propping seat, a nail bin, a nail pushing piece, a cutting blade, a blade spring, a limit stop, a stop supporting seat, a stop spring, a deflector rod and a driving device;
defining one end of the hemorrhoid ligation cutter close to an operator as the front end of the hemorrhoid ligation cutter, and the other end of the hemorrhoid ligation cutter close to the operator as the rear end of the hemorrhoid ligation cutter, wherein the rear end of the outer tube is connected to the front end of the shell in a positioning way, and the head cover is detachably fixed at the front end of the outer tube; the nail pushing piece, the cutting blade, the blade spring, the limit stop, the stop block supporting seat, the stop block spring and the deflector rod are all positioned in the outer tube; the driving device is arranged in the shell;
The main body of the nail pushing seat is a plate body, a first nail pushing guide groove and a second nail pushing guide groove are respectively arranged on two sides of the plate body of the nail pushing seat in the width direction along the direction from the rear end to the front end of the nail pushing seat, each of the first nail pushing guide groove and the second nail pushing guide groove is composed of a straight line section and an arc section, the straight line section of the first nail pushing guide groove is parallel to the straight line section of the second nail pushing guide groove along the length direction of the plate body of the nail pushing seat, and the arc sections of the first nail pushing guide groove and the arc section of the second nail pushing guide groove are both positioned at the front end of the nail pushing seat and are arranged in parallel in the thickness direction of the plate body of the nail pushing seat to form a spiral groove for forming ligature nails; the front ends of the nail pushing pieces are inserted into the inserted sections of the first nail pushing guide grooves and the second nail pushing guide grooves and are in sliding connection with the nail pushing seat, a section, located between the spiral grooves and the inserted sections, of the first nail pushing guide grooves and the second nail pushing guide grooves is used as a nail dropping opening, and the nail bin is abutted against the nail dropping opening; a first operation port for accommodating tissue of an affected part is formed in the plate body of the nail supporting seat and is close to the spiral groove; a first notch is arranged on the end surface of one side of the plate body of the nail supporting seat, which is close to the spiral groove, and the first notch is communicated with the first operation opening; a first operation opening and a second notch are respectively arranged on the side part of the head cover corresponding to the first operation opening and the first notch of the nail propping seat, and the second operation opening and the second notch are communicated;
The cutting blade is located on the nail pushing sheet and is in sliding connection with the nail pushing sheet, the cutting blade is a plate body, the front end of the plate body of the cutting blade is provided with a cutter head with a forward cutting edge, the plate body of the cutting blade is provided with a yielding port corresponding to the nail bin and the stop block supporting seat, the nail bin is located in the yielding port, the stop block supporting seat is installed on the yielding port of the cutting blade, and the nail bin is located in front of the stop block supporting seat; the limit stop is in sliding connection with the stop support seat in the direction perpendicular to the plate body of the cutting blade, the end face of the rear end of the yielding port is used as a limit end face, in an assembled state, the limit stop is in contact fit with the limit end face to enable the cutting blade to be positioned relative to the outer tube, one end of the stop spring is abutted against the limit stop, and the other end of the stop spring is abutted against the outer tube; an unlocking hole is formed in the limit stop block; the deflector rod is a rod body which is supported on the plate body of the cutting blade along the axial direction of the outer tube, and is provided with an inclined surface corresponding to the unlocking hole, and the inclined surface can be in contact fit with the unlocking hole;
the driving device is provided with a first driving end, a second driving end and a third driving end; the rear end of the nail pushing sheet is connected with the first driving end; the rear end of the deflector rod is connected with the second driving end; one end of the blade spring is abutted against the third driving end, and the other end of the blade spring is abutted against the rear end of the plate body of the cutting blade;
Under the state of use, the first drive end drives the nail pushing piece to move forward along the axial of outer tube until the nail pushing piece pushes away the ligature nail in the nail storehouse out, simultaneously, the second drive end drives the driving lever slides forward along the axial of outer tube on the cutting blade, the pre-compaction of third drive end blade spring, when the inclined plane on the driving lever slides to unlocking hole department, the driving lever can force limit stop upwards to slide for the dog supporting seat in the direction of the plate body of perpendicular to cutting blade until breaking away from the limit terminal surface, at this moment, the cutting blade slides forward and launches along the axial direction of outer tube on the nail pushing piece.
The content explanation in the first and second aspects is as follows:
1. in the above first technical scheme, only the first operation port is provided on the plate body of the nail supporting seat, and the second operation port is provided on the side portion of the hood corresponding to the first operation port, and the structural design is suitable for internal hemorrhoid tissues, and negative pressure suction can be performed on the internal hemorrhoid tissues at the first operation port and the second operation port through vacuum negative pressure.
In the second technical scheme, the plate body of the nail supporting seat is provided with a first operation opening and a first notch, and the side part of the head cover is provided with a second operation opening and a second notch with a cover corresponding to the first operation opening and the first notch respectively. The structure can be used for carrying out negative pressure suction on tissues to be ligated or carrying out traction on auxiliary instruments. That is, in the case of internal hemorrhoid, the internal hemorrhoid can be sucked under negative pressure by using only the first operation port and the second operation port on the premise of closing the cover on the second notch, and the cover on the second notch can be opened, so that the internal hemorrhoid can be pulled into the first operation port and the second operation port through the first notch and the second notch by using the auxiliary instrument. For small blood vessels or other tubular tissue (e.g., a cholecyst tube), the cap is opened over the second incision and the small blood vessel or other tubular tissue is pulled through the first and second incision into the first and second access ports with an auxiliary instrument.
2. In the two schemes, the head cover is a transparent cover body for convenient observation during operation.
3. In the above two schemes, drive arrangement includes inner tube, push away pipe support, connecting rod and spanner, inner tube, push away pipe support and connecting rod setting are in the casing, first drive end, second drive end and third drive end set up in the front end region of inner tube, the inner tube in its axial relatively push away pipe support location, the one end of connecting rod with push away the pipe support articulated, the other end of connecting rod with one point on the spanner tip articulates, another point on its tip articulates with the casing, corresponds the spanner protruding handle that is equipped with on the casing.
4. In the above two schemes, a negative pressure pipe for passing negative pressure is arranged in the shell, the front end of the negative pressure pipe is communicated with the rear end of the outer pipe or the inner pipe, and the rear end of the negative pressure pipe is arranged outside the shell in a penetrating way.
5. In the above two schemes, the nail pushing sheet is provided with a blade guide groove along the axial direction of the outer tube, and a bump is arranged on the contact surface of the cutting blade in sliding connection with the nail pushing sheet, corresponding to the blade guide groove, and the bump is matched with the blade guide groove to enable the cutting blade to be in sliding connection with the nail pushing sheet.
6. In the above two schemes, the body of rod of driving lever mainly comprises first section body of rod and second section body of rod integral type connection, the diameter of first section body of rod is greater than the diameter of second section body of rod, and the diameter of second section body of rod is less than the diameter of unlocking hole, and the junction of first section body of rod and second section body of rod is equipped with the inclined plane, and first section body of rod supports on the plate body of cutting blade, the front end face of second section body of rod is towards the unlocking hole support on the dog supporting seat.
7. In both of the above-mentioned versions, reference is made to "forward", "rearward", "front end" and "rear end" with respect to the end of the entire hemorrhoid ligation cutter that is adjacent to the operator (i.e., the patient) at the time of the surgical procedure as the front and the end of the entire hemorrhoid ligation cutter that is adjacent to the operator (i.e., the surgeon) as the rear.
In order to achieve the above object, according to the first and second hemorrhoid ligation cutters, the technical scheme of the ligation nail adopted by the invention is as follows: the ligature nail consists of a connecting part and two nail feet, wherein the two nail feet are respectively arranged on two end parts of the connecting part; in the assembled state of the hemorrhoid ligation cutter, a plurality of ligation nails are installed in the nail bin, a nail supporting spring is arranged in the nail bin, one end of the nail supporting spring is propped against the nail bin, the other end of the nail supporting spring is propped against the ligation nails, and the end parts of two nail feet of the ligation nails face the spiral groove. The ligature nail is made of metal (such as stainless steel and titanium alloy) meeting the requirements of an implant, can have different surface shapes and cross-section states, and is safer and more reliable to ligature compared with the current elastic ring in clinic.
The working principle of the invention is as follows: aiming at the problems that the reliability of the elastic ring ligation hemorrhoids is not high and the patients are painful in the process of waiting for the elastic ring to fall off by themselves in the prior clinic, the invention provides a hemorrhoid ligation cutter. First, according to the different hood structures of above-mentioned two kinds of technical schemes, first technical scheme's hood has only offered the operation mouth in its lateral part promptly, and second technical scheme's hood has opened the breach of operation mouth and area lid simultaneously in its lateral part, through selecting different hoods, hemorrhoid ligature cutterbar can be convenient through vacuum negative pressure to the tissue that needs ligature cutting draw, perhaps through auxiliary instrument to need ligature cut tissue draw.
Second, after the tissue is sucked or pulled to the foremost end of the hemorrhoid ligation cutter, the next step is to ligate the tissue. The nail bin is positioned on the nail falling opening of the nail supporting seat, a plurality of ligature nails are arranged in the nail bin, a nail supporting spring is arranged in the nail bin, and on the premise that the ligature nails are arranged in the nail bin, one ligature nail is always supported on the nail falling opening, and the end parts of two nail feet of the ligature nails face to the spiral groove on the premise that the ligature nails are arranged in the nail bin; the straight line section of the first nail pushing guide groove and the second nail pushing guide groove is equivalent to the sliding guide groove of the nail pushing sheet, the circular arc sections of the first nail pushing guide groove and the second nail pushing guide groove are arranged in parallel in the thickness direction of the plate body of the nail pushing seat to form a spiral groove, the structural design of the spiral groove is ingenious, the straight line section is communicated with the circular arc sections, when the nail pushing sheet slides to push nails towards the front end of the nail pushing seat until the ligature nails are pushed to the spiral groove, the ligature nails are formed at the spiral groove, at the moment, the ligature nails are mutually held by the two legs and the connecting parts of the two legs, and the formed ligature nails firmly tie tissues.
Thirdly, after ligating the tissue, the tissue needs to be cut immediately, and the special structural design of the invention can realize continuous ligating and cutting actions. Namely, the continuous two actions of ligation and cutting can be completed by firing the wrench once, and the specific structural design is that three driving ends are arranged on the same area position of the driving device in the shell and are divided into three paths to respectively act on the nail pushing sheet, the deflector rod and the cutting blade. The cutting blade is located on the nail pushing sheet and is in sliding connection with the nail pushing sheet, the nail pushing sheet corresponds to a blade seat of the cutting blade, the stop support seat and the deflector rod are supported on the cutting blade, a yielding opening is formed in the cutting blade, the nail bin is located in the yielding opening and corresponds to suspension of the cutting blade outside the nail bin, in the assembled state, the limit stop on the stop support seat is abutted against the end face of the rear end of the yielding opening, namely the limit end face, the nail bin is located at the forefront side when seen from the positions of the nail bin, the stop support seat and the deflector rod, the stop support seat is located in the middle, the deflector rod is located at the rear side, the distance between the stop support seat and the deflector rod is calculated, then when three driving ends are pushed forward simultaneously, the nail pushing sheet can act on a ligature nail in the nail bin firstly to finish ligation, the third driving end always pre-presses the blade spring to store the emission of the cutting blade, when the second driving end drives the deflector rod to slide forward on the cutting blade along the axial direction of the outer tube until the inclined plane contacts with the unlocking hole, the deflector rod forces the limit stop to be separated from the support seat in the direction perpendicular to the direction of the plate body of the cutting blade, and the limit stop is ejected upwards relative to the support face until the cutting blade is ejected to cut tissue. The wrench is fired once again, so that two continuous actions of ligature cutting can be performed again, namely, the invention can continuously and repeatedly ligature and cut tissues.
Compared with the prior art, the invention has the beneficial effects that:
(1) The front end structure of the nail supporting seat and the side opening structure of the hood can conveniently attract or pull tissues to the hemorrhoid ligation cutter;
(2) The structure of the ligature nail and the structure of the front end for forming the ligature nail, namely the spiral groove structure, are ingenious in design, can firmly tie tissues, and ensure the reliability of the ligature performance;
(3) The invention can realize automatic cutting after ligature of tissue at affected part, and the push pin structure and the push knife structure are linked, thereby completing ligature and then cutting, and ligature cutting can be performed again after ligature cutting is completed once, namely ligature cutting can be continuously performed;
(4) After the ligation and cutting are completed on the tissue, the ligation nail is left on the tissue and falls off along with the healing of scab at the tissue cutting part to be discharged out of the body, and after ligation, the phenomenon of bleeding at the wound part is avoided.
In a word, the hemorrhoid ligation cutter has high ligation reliability on hemorrhoids and even other tubular tissues, can automatically cut the tissues after ligating, can continuously and repeatedly perform ligation cutting, has thorough treatment for patients, and is simple and labor-saving for doctors.
Drawings
FIG. 1 is a schematic view of the overall structure of a hemorrhoid ligator cutter with hood of example 1;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of the hemorrhoid ligation cutter of example 1 without a hood and outer tube;
FIG. 4 is an exploded view of the hemorrhoid ligator cutter of example 1;
FIG. 5 is a schematic diagram showing the assembly of the nail pushing seat, the nail cartridge and the nail pushing sheet in the hemorrhoid ligating cutter of the embodiment 1;
FIG. 6 is a schematic view showing the structure of a cutter in the hemorrhoid ligation cutter according to example 1;
FIG. 7 is a schematic diagram showing the assembly of the nail pushing seat, the nail bin, the nail pushing sheet and the cutting knife in the hemorrhoid ligating cutter of the embodiment 1;
FIG. 8 is an exploded view of the cutting blade, the stop support, the limit stop, the stop spring, and the lever of the hemorrhoid ligator of example 1;
FIG. 9 is a schematic view of a staple holder without a ligation staple and without a first notch in the hemorrhoid ligation cutter of example 1;
FIG. 10 is a schematic view of the structure of the abutment with the ligating nail in the hemorrhoid ligating cutter of example 1;
FIG. 11 is a schematic view of a staple supporting seat with a first notch in the hemorrhoid ligation cutter of example 2;
FIG. 12 is a schematic view of a hood with a second notch in the hemorrhoid ligator of example 2;
FIG. 13 is a schematic view showing the internal structure of a housing of the hemorrhoid ligation cutter of example 1;
FIG. 14 is a schematic view showing the structure of the ligation nail according to example 1 before ligation;
FIG. 15 is a schematic view showing the structure of the ligature nail of example 1 after ligation;
FIG. 16 is a schematic view of the ligation nail of example 1 ligated to internal hemorrhoidal tissue.
In the above figures: 1. a housing; 2. a head cover; 3. an outer tube; 4. a nail supporting seat; 5. a staple cartridge; 6. nail pushing sheets; 7. a first push pin guide slot; 8. a second push pin guide groove; 9. a spiral groove; 10. a nail falling opening; 11. a first operation port; 12. a second operation port; 13. an inner tube; 14. pushing the pipe rack; 15. a connecting rod; 16. a wrench; 17. a handle; 18. a negative pressure pipe; 19. a first notch; 20. a second notch; 21. ligature nails; 22. internal hemorrhoid tissue; 23. a connection part; 24. nailing feet; 25. a cutting blade; 26. a blade spring; 27. a limit stop; 28. a stop block supporting seat; 29. a stop spring; 30. a deflector rod; 31. a cutter head; 32. a limiting end face; 33. unlocking the hole; 34. an inclined plane; 35. blade guide slots; 36. a bump; 37. a first section of rod body; 38. a second section of rod body; 39. a yielding port; 40. and a negative pressure start-stop switch.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples:
example 1: hemorrhoid ligation cutter
Referring to fig. 1 to 10 and 13 to 16, the hemorrhoid ligation cutter comprises a shell 1, a hood 2, an outer tube 3, a nail supporting seat 4, a nail bin 5, a nail pushing sheet 6, a cutting blade 25, a blade spring 26, a limit stop 27, a stop supporting seat 28, a stop spring 29, a deflector rod 30 and a driving device;
defining one end of the hemorrhoid ligation cutter close to an operator (generally referred to as a patient requiring an operation) as a front end of the hemorrhoid ligation cutter, and the other end of the hemorrhoid ligation cutter close to the operator (generally referred to as a surgeon) as a rear end of the hemorrhoid ligation cutter, the rear end of the outer tube 3 being positioned and connected to the front end of the housing 1, i.e., the outer tube 3 being positioned in its axial direction with respect to the front end of the housing 1, the outer tube 3 being rotatable about its center with respect to the front end of the housing 1, the head cap 2 being detachably fixed to the front end of the outer tube 3; the nail pushing seat 4 and the nail bin 5 are arranged in the hood 2, and the nail pushing sheet 6, the cutting blade 25, the blade spring 26, the limit stop 27, the stop block supporting seat 28, the stop block spring 29 and the deflector rod are all positioned in the outer tube 3; the driving device is arranged in the shell 1;
The main body of the nail pushing seat 4 is a plate body, a first nail pushing guide groove 7 and a second nail pushing guide groove 8 are respectively arranged on two sides of the plate body of the nail pushing seat 4 in the width direction along the direction from the rear end to the front end of the nail pushing seat 4, the first nail pushing guide groove 7 and the second nail pushing guide groove 8 are respectively composed of straight line sections and circular arc sections, the straight line sections of the first nail pushing guide groove 7 are parallel to the straight line sections of the second nail pushing guide groove 8 along the length direction of the plate body of the nail pushing seat 4, and the circular arc sections of the first nail pushing guide groove 7 and the circular arc sections of the second nail pushing guide groove 8 are both positioned at the front end of the nail pushing seat 4 and are arranged in parallel in the thickness direction of the plate body of the nail pushing seat 4 to form a spiral groove 9 for forming ligature nails; the front ends of the nail pushing pieces 6 are inserted into the inserted sections of the first nail pushing guide grooves 7 and the second nail pushing guide grooves 8 and are in sliding connection with the nail pushing seat 4, the sections of the first nail pushing guide grooves 7 and the second nail pushing guide grooves 8, which are positioned between the spiral grooves 9 and the inserted sections, are used as nail falling openings 10, and the nail bins 5 are abutted against the nail falling openings 10; a first operation opening 11 for accommodating tissue of an affected part is formed in the plate body of the nail supporting seat 4 and is adjacent to the spiral groove 9; a second operation opening 12 is arranged on the side part of the head cover 2 corresponding to the first operation opening 11 of the nail propping seat 4; for facilitating surgical observation, the hood 2 is a transparent hood body;
The cutting blade 25 is located on the nail pushing plate 6 and is slidably connected with the nail pushing plate 6, and the specific sliding connection mode is that a blade guide groove 35 is arranged on the nail pushing plate 6 along the axial direction of the outer tube 3, a convex block 36 is arranged on the contact surface of the cutting blade 25, which is slidably connected with the nail pushing plate 6, of the cutting blade 25, corresponding to the blade guide groove 35, and the convex block 36 is matched with the blade guide groove 35 to enable the cutting blade 25 to be slidably connected with the nail pushing plate 6;
the cutting blade 25 is a plate body, the front end of the plate body of the cutting blade 25 is provided with a cutter head 31 with a forward cutting edge, the plate body of the cutting blade 25 is provided with a yielding port 39 corresponding to the nail bin 5 and the stop block supporting seat 28, the nail bin 5 is located in the yielding port 39, the stop block supporting seat 28 is arranged on the yielding port 39 of the cutting blade 25, and the nail bin 5 is located in front of the stop block supporting seat 28; the limit stop 27 is slidably connected with the stop support seat 28 in a direction perpendicular to the plate body of the cutting blade 25, the end face of the rear end of the yielding port 39 is used as a limit end face 32, in the assembled state, the limit stop 27 is in contact fit with the limit end face 32 so that the cutting blade 25 is positioned relative to the outer tube 3, one end of the stop spring 29 is abutted against the limit stop 27, and the other end of the stop spring 29 is abutted against the outer tube 3; the limit stop 27 is provided with an unlocking hole 33;
The deflector rod 30 is positioned behind the stop block supporting seat 28, the deflector rod 30 is a rod body, the rod body is supported on the plate body of the cutting blade 25 along the axial direction of the outer tube 3, an inclined surface 34 is arranged on the rod body corresponding to the unlocking hole 33, and the inclined surface 34 can be in contact fit with the unlocking hole 33; in order for the shifter lever 30 to be more firmly supported on the cutting blade 25, the shifter lever 30 may have a specific structure: the rod body of the deflector rod 30 is mainly formed by integrally connecting a first section of rod body 37 and a second section of rod body 38, the diameter of the first section of rod body 37 is larger than that of the second section of rod body 38, the diameter of the second section of rod body 38 is smaller than that of the unlocking hole 33, the inclined plane 34 is arranged at the joint of the first section of rod body 37 and the second section of rod body 38, the first section of rod body 37 is supported on the plate body of the cutting blade 25, and the front end surface of the second section of rod body 38 faces the unlocking hole 33 and is supported on the stop block supporting seat 28;
the driving device comprises an inner tube 13, a push tube rack 14, a connecting rod 15 and a spanner 16, wherein the inner tube 13, the push tube rack 14 and the connecting rod 15 are arranged in the shell 1, the first driving end, the second driving end and the third driving end are all positioned in the front end area of the inner tube 13, the inner tube 13 is positioned relative to the push tube rack 14 in the axial direction of the inner tube, the inner tube 13 can rotate relative to the push tube rack 14 around the central axis of the inner tube 13, one end of the connecting rod 15 is hinged with the push tube rack 14, the other end of the connecting rod 15 is hinged with one point on the end part of the spanner 16, the other point on the end part of the spanner 16 is hinged with the shell 1, and a handle 17 is arranged on the shell 1 corresponding to the spanner 16 in a protruding manner; the rear end of the nail pushing piece 6 is connected with the first driving end; the rear end of the deflector rod 30 is connected with the second driving end; one end of the blade spring 26 abuts against the third driving end, and the other end of the blade spring 26 abuts against the rear end of the plate body of the cutting blade 25;
A negative pressure pipe 18 for introducing negative pressure is arranged in the shell 1, the front end of the negative pressure pipe 18 is communicated with the rear end of the inner pipe 13, the rear end of the negative pressure pipe 18 is arranged outside the shell 1 in a penetrating way, and the rear end of the negative pressure pipe 18 can be used as a negative pressure suction interface to be connected with a negative pressure suction device; the middle part of the negative pressure pipe 18 is also provided with a negative pressure start-stop switch 40 for controlling the on and off of the negative pressure, and the negative pressure start-stop switch 40 is actually a valve.
In the use state, the first driving end drives the nail pushing plate 6 to move forward along the axial direction of the outer tube 3 until the nail pushing plate 6 pushes out the ligature nails in the nail bin 5, meanwhile, the second driving end drives the deflector rod 30 to slide forward along the axial direction of the outer tube 3 on the cutting blade 25, the third driving end pre-presses the blade spring 26, when the inclined surface 34 on the deflector rod 30 slides to the unlocking hole 33, the deflector rod 30 can force the limit stop 27 to slide upwards relative to the stop block supporting seat 28 in the direction vertical to the plate body of the cutting blade 25 until the limit end surface 32 is separated, and at the moment, the cutting blade 25 slides forward along the axial direction of the outer tube 3 on the nail pushing plate 6 and is launched out.
In a use state, a ligature nail 21 is arranged in the nail bin 5 of the hemorrhoid ligature cutter, the ligature nail 21 consists of a connecting part 23 and two nail feet 24, and the two nail feet 24 are respectively arranged on two end parts of the connecting part 23; the sum of the lengths of the two nail feet 24 is larger than the length of the connecting part 23 and smaller than twice the length of the connecting part 23, the length of a single nail foot 24 is smaller than the length of the connecting part 23, and the lengths of the nail feet 24 and the connecting part 23 are required to meet the three conditions at the same time, so that the two nail feet 24 can be staggered with each other and the nail feet and the connecting part are cohesive together after the ligature nail is formed; a plurality of ligature nails 21 are installed in the nail bin 5, a nail abutting spring is arranged in the nail bin 5, one end of the nail abutting spring abuts against the nail bin 5, the other end of the nail abutting spring abuts against the ligature nails 21, and the end parts of the nail feet 24 of the ligature nails 21 face the spiral groove 9.
The whole appearance of the hemorrhoid ligation cutter can be designed into a gun-type appearance, and the hemorrhoid ligation cutter is used as a product to be sterilized by ethylene oxide, and the material of the product meets the requirements of GB/T16886.1. The ligating nail 21 material is made of a metal (e.g., stainless steel, titanium alloy) that meets the requirements of the implant. 6 to 8 ligature nails 21 can be arranged in the nail bin 5, and ligature cutting can be continuously carried out for 6 to 8 times.
The operation flow is used: opening the sterile package; a negative pressure suction device is connected to the rear end of the negative pressure pipe 18; under the guidance of an auxiliary instrument anoscope, adjusting or rotating the hemorrhoid ligation cutter; aligning the second operation port 12 of the head cap 2 with the tissue of the affected part; pressing the negative pressure start-stop switch 40, observing the attracted tissue from the transparent hood 2; the firing wrench 16 is held to the bottom to complete one ligation cut. The negative pressure start-stop switch 40 can be reset automatically. A second ligature pin 21 is in place and a further ligature cut can be made.
Some variations on example 1 illustrate:
(1) Regarding the sliding connection mode of the cutting blade 25 and the ejector pin sheet 6, the positions of the blade guide groove 35 and the protruding block 36 can be exchanged, that is, the ejector pin sheet 6 is provided with the protruding block 36, and the cutting blade 25 is provided with the blade guide groove 35 matched with the protruding block 36.
(2) The above-mentioned driving lever 30 is designed to be formed by integrally connecting a first segment of lever body 37 and a second segment of lever body 38, and the front end surface of the second segment of lever body 38 is supported on the stop support seat 28 toward the unlocking hole 33, which is an optimal solution, so that the driving lever 30 can be more stably supported on the cutting blade 25. The shift lever 30 may be designed to have only one segment of lever body, and the lever body must be provided with an inclined surface 34 corresponding to the unlocking hole 33.
(3) The specific structural form of the driving device belongs to the prior art, and other common structures in the prior art can be adopted.
Example 2: hemorrhoid ligation cutter
Referring to fig. 11 and 12, the difference between embodiment 2 and embodiment 1 is the opening structure of the nail holder and the head cover, and the other structures of embodiment 2 are the same as those of embodiment 1. A first operation opening 11 for accommodating tissue of an affected part is formed on the plate body of the nail supporting seat 4 adjacent to the spiral groove 9 in embodiment 2, a first notch 19 is formed on the end surface of one side of the plate body of the nail supporting seat 4 adjacent to the spiral groove, and the first notch 19 is communicated with the first operation opening 11; the side part of the head cover 2 is provided with a second operation opening 12 and a second notch 20 corresponding to the first operation opening 11 and the first notch 19 of the nail supporting seat 4, and the second operation opening 12 and the second notch 20 are communicated. The structure can be used for carrying out negative pressure suction on tissues to be ligated or carrying out traction on auxiliary instruments, namely the structure can be used for two purposes. In the case of internal hemorrhoids, the internal hemorrhoids may be sucked under negative pressure by using only the first operation port 11 and the second operation port 12 with the cover provided on the second notch 20 closed, or the cover provided on the second notch 20 may be opened, and the internal hemorrhoids may be pulled into the first operation port 11 and the second operation port 12 through the first notch 19 and the second notch 20 by using an auxiliary instrument. For small blood vessels or other tubular tissue (e.g., a cholecyst tube), the cap on the second notch 20 is opened and the small blood vessels or other tubular tissue is pulled into the first and second ports 11 and 12 through the first and second notches 19 and 20 with an auxiliary instrument. In addition, embodiment 2 may be designed without the negative pressure tube 18, in which case the hemorrhoid ligator cutter of embodiment 2 is only suitable for pulling tissue into the hood 2 with an auxiliary instrument.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (10)
1. A hemorrhoid ligation cutter, characterized in that: the hemorrhoid ligation cutter comprises a shell (1), a hood (2), an outer tube (3), a nail pushing seat (4), a nail bin (5), a nail pushing sheet (6), a cutting blade (25), a blade spring (26), a limit stop (27), a stop block supporting seat (28), a stop block spring (29), a deflector rod (30) and a driving device;
defining one end of the hemorrhoid ligation cutter close to an operator as the front end of the hemorrhoid ligation cutter, and the other end of the hemorrhoid ligation cutter close to the operator as the rear end of the hemorrhoid ligation cutter, wherein the rear end of the outer tube (3) is connected to the front end of the shell (1) in a positioning way, and the head cover (2) is detachably fixed at the front end of the outer tube (3); the nail pushing seat (4) and the nail bin (5) are arranged in the hood (2), and the nail pushing sheet (6), the cutting blade (25), the blade spring (26), the limit stop (27), the stop block supporting seat (28), the stop block spring (29) and the deflector rod are all positioned in the outer tube (3); the driving device is arranged in the shell (1);
The main body of the nail pushing seat (4) is a plate body, a first nail pushing guide groove (7) and a second nail pushing guide groove (8) are respectively arranged on two sides of the plate body of the nail pushing seat (4) in the width direction along the direction from the rear end to the front end of the nail pushing seat (4), the first nail pushing guide groove (7) and the second nail pushing guide groove (8) are composed of straight line sections and circular arc sections, the straight line sections of the first nail pushing guide groove (7) are parallel to the straight line sections of the second nail pushing guide groove (8) along the length direction of the plate body of the nail pushing seat (4), and the circular arc sections of the first nail pushing guide groove (7) and the circular arc sections of the second nail pushing guide groove (8) are both positioned at the front end of the nail pushing seat (4) and are arranged in parallel in the thickness direction of the plate body of the nail pushing seat (4) to form spiral grooves (9) for ligature nail forming; the front ends of the nail pushing pieces (6) are inserted into the inserting sections of the first nail pushing guide grooves (7) and the second nail pushing guide grooves (8) and are in sliding connection with the nail pushing seat (4), one section, located between the spiral groove (9) and the inserting sections, of the first nail pushing guide grooves (7) and the second nail pushing guide grooves (8) is used as a nail falling opening (10), and the nail bin (5) is abutted against the nail falling opening (10); a first operation opening (11) for accommodating tissue of an affected part is formed in the plate body of the nail supporting seat (4) adjacent to the spiral groove (9); a second operation opening (12) is arranged on the side part of the head cover (2) corresponding to the first operation opening (11) of the nail propping seat (4);
The cutting blade (25) is located on the nail pushing sheet (6) and is in sliding connection with the nail pushing sheet (6), the cutting blade (25) is a plate body, a cutter head (31) with a forward cutting edge is arranged at the front end of the plate body of the cutting blade (25), a yielding port (39) is formed in the plate body of the cutting blade (25) at a position corresponding to the nail bin (5) and the stop block supporting seat (28), the nail bin (5) is located in the yielding port (39), the stop block supporting seat (28) is installed on the yielding port (39) of the cutting blade (25), and the nail bin (5) is located in front of the stop block supporting seat (28); the limit stop (27) is in sliding connection with the stop support seat (28) in the direction perpendicular to the plate body of the cutting blade (25), the end face of the rear end of the yielding port (39) serves as a limit end face (32), in the assembled state, the limit stop (27) is in contact fit with the limit end face (32) so that the cutting blade (25) is positioned relative to the outer tube (3), one end of the stop spring (29) abuts against the limit stop (27), and the other end of the stop spring (29) abuts against the outer tube (3); an unlocking hole (33) is formed in the limit stop (27); the deflector rod (30) is positioned behind the stop block supporting seat (28), the deflector rod (30) is a rod body, the rod body is supported on the plate body of the cutting blade (25) along the axial direction of the outer tube (3), an inclined surface (34) is arranged on the rod body corresponding to the unlocking hole (33), and the inclined surface (34) can be in contact fit with the unlocking hole (33);
The driving device is provided with a first driving end, a second driving end and a third driving end; the rear end of the nail pushing piece (6) is connected with the first driving end; the rear end of the deflector rod (30) is connected with the second driving end; one end of the blade spring (26) is abutted against the third driving end, and the other end of the blade spring (26) is abutted against the rear end of the plate body of the cutting blade (25);
in the use state, the first driving end drives the ejector pin piece (6) to move forward along the axial direction of the outer tube (3) until the ejector pin piece (6) pushes out the ligature nail in the nail bin (5), simultaneously, the second driving end drives the deflector rod (30) to slide forward along the axial direction of the outer tube (3) on the cutting blade (25), the third driving end is preloaded with the blade spring (26), when the inclined surface (34) on the deflector rod (30) slides to the unlocking hole (33), the deflector rod (30) can force the limit stop (27) to slide upwards relative to the stop support seat (28) in the direction perpendicular to the plate body of the cutting blade (25) until the limit end face (32) is separated, and at the moment, the cutting blade (25) slides forward and is launched out along the axial direction of the outer tube (3) on the ejector pin piece (6).
2. The hemorrhoid ligating cutter according to claim 1, wherein: the nail pushing piece (6) is provided with a blade guide groove (35) along the axial direction of the outer tube (3), a bump (36) is arranged on the contact surface of the cutting blade (25) which is in sliding connection with the nail pushing piece (6) and corresponds to the blade guide groove (35), and the bump (36) is matched with the blade guide groove (35) so that the cutting blade (25) is in sliding connection with the nail pushing piece (6).
3. The hemorrhoid ligating cutter according to claim 1, wherein: the rod body of driving lever (30) mainly comprises first section body of rod (37) and second section body of rod (38) integral type connection, the diameter of first section body of rod (37) is greater than the diameter of second section body of rod (38), and the diameter of second section body of rod (38) is less than the diameter of unlocking hole (33), and the junction of first section body of rod (37) and second section body of rod (38) is equipped with inclined plane (34), and first section body of rod (37) support is in on the plate body of cutting blade (25), and the front end face of second section body of rod (38) is towards unlocking hole (33) support in on dog supporting seat (28).
4. The hemorrhoid ligating cutter according to claim 1, wherein: the driving device comprises an inner tube (13), a push pipe rack (14), a connecting rod (15) and a spanner (16), wherein the inner tube (13), the push pipe rack (14) and the connecting rod (15) are arranged in the shell (1), the first driving end, the second driving end and the third driving end are arranged in the front end area of the inner tube (13), the inner tube (13) is axially opposite to the push pipe rack (14) in positioning mode, one end of the connecting rod (15) is hinged to the push pipe rack (14), the other end of the connecting rod (15) is hinged to one point on the end of the spanner (16), the other point on the end of the spanner (16) is hinged to the shell (1), and a handle (17) is arranged on the shell (1) in a protruding mode corresponding to the spanner (16).
5. The hemorrhoid ligation cutter according to claim 1 or 4, wherein: the shell (1) is internally provided with a negative pressure pipe (18) for leading negative pressure, the front end of the negative pressure pipe (18) is communicated with the rear end of the outer pipe (3) or the inner pipe (13), and the rear end of the negative pressure pipe (18) is arranged outside the shell (1).
6. A hemorrhoid ligation cutter, characterized in that: the hemorrhoid ligation cutter comprises a shell (1), a hood (2), an outer tube (3), a nail pushing seat (4), a nail bin (5), a nail pushing sheet (6), a cutting blade (25), a blade spring (26), a limit stop (27), a stop block supporting seat (28), a stop block spring (29), a deflector rod (30) and a driving device;
Defining one end of the hemorrhoid ligation cutter close to an operator as the front end of the hemorrhoid ligation cutter, and the other end of the hemorrhoid ligation cutter close to the operator as the rear end of the hemorrhoid ligation cutter, wherein the rear end of the outer tube (3) is connected to the front end of the shell (1) in a positioning way, and the head cover (2) is detachably fixed at the front end of the outer tube (3); the nail pushing seat (4) and the nail bin (5) are arranged in the hood (2), and the nail pushing sheet (6), the cutting blade (25), the blade spring (26), the limit stop (27), the stop block supporting seat (28), the stop block spring (29) and the deflector rod are all positioned in the outer tube (3); the driving device is arranged in the shell (1);
the main body of the nail pushing seat (4) is a plate body, a first nail pushing guide groove (7) and a second nail pushing guide groove (8) are respectively arranged on two sides of the plate body of the nail pushing seat (4) in the width direction along the direction from the rear end to the front end of the nail pushing seat (4), the first nail pushing guide groove (7) and the second nail pushing guide groove (8) are composed of straight line sections and circular arc sections, the straight line sections of the first nail pushing guide groove (7) are parallel to the straight line sections of the second nail pushing guide groove (8) along the length direction of the plate body of the nail pushing seat (4), and the circular arc sections of the first nail pushing guide groove (7) and the circular arc sections of the second nail pushing guide groove (8) are both positioned at the front end of the nail pushing seat (4) and are arranged in parallel in the thickness direction of the plate body of the nail pushing seat (4) to form spiral grooves (9) for ligature nail forming; the front ends of the nail pushing pieces (6) are inserted into the inserting sections of the first nail pushing guide grooves (7) and the second nail pushing guide grooves (8) and are in sliding connection with the nail pushing seat (4), one section, located between the spiral groove (9) and the inserting sections, of the first nail pushing guide grooves (7) and the second nail pushing guide grooves (8) is used as a nail falling opening (10), and the nail bin (5) is abutted against the nail falling opening (10); a first operation opening (11) for accommodating tissue of an affected part is formed in the plate body of the nail supporting seat (4) close to the spiral groove (9), a first notch (19) is formed in the end face of one side of the plate body of the nail supporting seat (4) close to the spiral groove, and the first notch (19) is communicated with the first operation opening (11); a second operation opening (12) and a second notch (20) are respectively arranged on the side part of the head cover (2) corresponding to the first operation opening (11) and the first notch (19) of the nail propping seat (4), and the second operation opening (12) and the second notch (20) are communicated;
The cutting blade (25) is located on the nail pushing sheet (6) and is in sliding connection with the nail pushing sheet (6), the cutting blade (25) is a plate body, a cutter head (31) with a forward cutting edge is arranged at the front end of the plate body of the cutting blade (25), a yielding port (39) is formed in the plate body of the cutting blade (25) at a position corresponding to the nail bin (5) and the stop block supporting seat (28), the nail bin (5) is located in the yielding port (39), the stop block supporting seat (28) is installed on the yielding port (39) of the cutting blade (25), and the nail bin (5) is located in front of the stop block supporting seat (28); the limit stop (27) is in sliding connection with the stop support seat (28) in the direction perpendicular to the plate body of the cutting blade (25), the end face of the rear end of the yielding port (39) serves as a limit end face (32), in the assembled state, the limit stop (27) is in contact fit with the limit end face (32) so that the cutting blade (25) is positioned relative to the outer tube (3), one end of the stop spring (29) abuts against the limit stop (27), and the other end of the stop spring (29) abuts against the outer tube (3); an unlocking hole (33) is formed in the limit stop (27); the deflector rod (30) is positioned behind the stop block supporting seat (28), the deflector rod (30) is a rod body, the rod body is supported on the plate body of the cutting blade (25) along the axial direction of the outer tube (3), an inclined surface (34) is arranged on the rod body corresponding to the unlocking hole (33), and the inclined surface (34) can be in contact fit with the unlocking hole (33);
The driving device is provided with a first driving end, a second driving end and a third driving end; the rear end of the nail pushing piece (6) is connected with the first driving end; the rear end of the deflector rod (30) is connected with the second driving end; one end of the blade spring (26) is abutted against the third driving end, and the other end of the blade spring (26) is abutted against the rear end of the plate body of the cutting blade (25);
in the use state, the first driving end drives the ejector pin piece (6) to move forward along the axial direction of the outer tube (3) until the ejector pin piece (6) pushes out the ligature nail in the nail bin (5), simultaneously, the second driving end drives the deflector rod (30) to slide forward along the axial direction of the outer tube (3) on the cutting blade (25), the third driving end is preloaded with the blade spring (26), when the inclined surface (34) on the deflector rod (30) slides to the unlocking hole (33), the deflector rod (30) can force the limit stop (27) to slide upwards relative to the stop support seat (28) in the direction perpendicular to the plate body of the cutting blade (25) until the limit end face (32) is separated, and at the moment, the cutting blade (25) slides forward and is launched out along the axial direction of the outer tube (3) on the ejector pin piece (6).
7. The hemorrhoid ligating cutter according to claim 6, wherein: the nail pushing piece (6) is provided with a blade guide groove (35) along the axial direction of the outer tube (3), a bump (36) is arranged on the contact surface of the cutting blade (25) which is in sliding connection with the nail pushing piece (6) and corresponds to the blade guide groove (35), and the bump (36) is matched with the blade guide groove (35) so that the cutting blade (25) is in sliding connection with the nail pushing piece (6).
8. The hemorrhoid ligating cutter according to claim 6, wherein: the rod body of driving lever (30) mainly comprises first section body of rod (37) and second section body of rod (38) integral type connection, the diameter of first section body of rod (37) is greater than the diameter of second section body of rod (38), and the diameter of second section body of rod (38) is less than the diameter of unlocking hole (33), and the junction of first section body of rod (37) and second section body of rod (38) is equipped with inclined plane (34), and first section body of rod (37) support is in on the plate body of cutting blade (25), and the front end face of second section body of rod (38) is towards unlocking hole (33) support in on dog supporting seat (28).
9. The hemorrhoid ligating cutter according to claim 6, wherein: the driving device comprises an inner tube (13), a push pipe rack (14), a connecting rod (15) and a spanner (16), wherein the inner tube (13), the push pipe rack (14) and the connecting rod (15) are arranged in the shell (1), the first driving end, the second driving end and the third driving end are arranged in the front end area of the inner tube (13), the inner tube (13) is axially opposite to the push pipe rack (14) in positioning mode, one end of the connecting rod (15) is hinged to the push pipe rack (14), the other end of the connecting rod (15) is hinged to one point on the end of the spanner (16), the other point on the end of the spanner (16) is hinged to the shell (1), and a handle (17) is arranged on the shell (1) in a protruding mode corresponding to the spanner (16).
10. The hemorrhoid ligation cutter according to claim 6 or 9 wherein: the shell (1) is internally provided with a negative pressure pipe (18) for leading negative pressure, the front end of the negative pressure pipe (18) is communicated with the rear end of the outer pipe (3) or the inner pipe (13), and the rear end of the negative pressure pipe (18) is arranged outside the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905478.2A CN107684446B (en) | 2017-09-29 | 2017-09-29 | Hemorrhoid ligation cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905478.2A CN107684446B (en) | 2017-09-29 | 2017-09-29 | Hemorrhoid ligation cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107684446A CN107684446A (en) | 2018-02-13 |
| CN107684446B true CN107684446B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710905478.2A Active CN107684446B (en) | 2017-09-29 | 2017-09-29 | Hemorrhoid ligation cutter |
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| CN (1) | CN107684446B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236627B (en) * | 2019-05-06 | 2024-01-12 | 苏州贝诺医疗器械有限公司 | Surgical instrument with fastening and cutting functions |
| CN110353769B (en) * | 2019-07-19 | 2024-06-04 | 湖南灵康医疗科技有限公司 | Elastic thread loop ligature device with single-drive thread cutting function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU107965A2 (en) * | 1955-04-04 | 1956-11-30 | Г.П. Тярасов | Apparatus for tying pulmonary vessels and other hollow organs with tantalum clips |
| GB910148A (en) * | 1959-09-02 | 1962-11-14 | Res Inst Of Ex Surgical Appara | A surgical stapling instrument |
| US4086926A (en) * | 1976-10-08 | 1978-05-02 | United States Surgical Corporation | Ligating and dividing organic structures |
| CN101455577A (en) * | 2007-12-12 | 2009-06-17 | 苏州天臣国际医疗科技有限公司 | Medical cutting bookbinding device |
| CN102160811A (en) * | 2011-05-17 | 2011-08-24 | 苏州贝诺医疗器械有限公司 | Suturing instrument with empty nail chamber protection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2580931C (en) * | 2004-09-23 | 2013-05-07 | Tyco Healthcare Group Lp | Clip applying apparatus and ligation clip |
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2017
- 2017-09-29 CN CN201710905478.2A patent/CN107684446B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU107965A2 (en) * | 1955-04-04 | 1956-11-30 | Г.П. Тярасов | Apparatus for tying pulmonary vessels and other hollow organs with tantalum clips |
| GB910148A (en) * | 1959-09-02 | 1962-11-14 | Res Inst Of Ex Surgical Appara | A surgical stapling instrument |
| US4086926A (en) * | 1976-10-08 | 1978-05-02 | United States Surgical Corporation | Ligating and dividing organic structures |
| CN101455577A (en) * | 2007-12-12 | 2009-06-17 | 苏州天臣国际医疗科技有限公司 | Medical cutting bookbinding device |
| CN102160811A (en) * | 2011-05-17 | 2011-08-24 | 苏州贝诺医疗器械有限公司 | Suturing instrument with empty nail chamber protection |
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| CN107684446A (en) | 2018-02-13 |
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