CN111568485B - Automatic medical patch staple firing apparatus of formula of buckling - Google Patents
Automatic medical patch staple firing apparatus of formula of buckling Download PDFInfo
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- CN111568485B CN111568485B CN202010396602.9A CN202010396602A CN111568485B CN 111568485 B CN111568485 B CN 111568485B CN 202010396602 A CN202010396602 A CN 202010396602A CN 111568485 B CN111568485 B CN 111568485B
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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
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0063—Implantable repair or support meshes, e.g. hernia meshes
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Abstract
The invention discloses an automatic bending type medical patch fixing nail firing instrument, and belongs to the field of medical instruments. The invention relates to a medical patch fixing nail firing instrument, which comprises a handle component, a sleeve component, a tong head component and a reset mechanism, wherein a movable handle in the handle component is used for pushing a tong head push pipe in the sleeve component to move so as to drive two tong heads to be closed or opened, a cutter push rod in the sleeve component is driven to move by utilizing the cam profile of a cam so as to drive a cutter at the front end of the cutter push rod to move so as to cut off the thin wall at the tail part of a patch fixing nail, so that the tong heads can close and clamp the patch fixing nail, the thin wall at the tail part of the patch fixing nail is cut off, the positioning clamping of the forceps head on the patch fixing nail and the cutting-off action of the thin wall at the tail part of the patch fixing nail can be finished sequentially or simultaneously through one-time triggering action, a series of actions of clamping, thin wall cutting, implanting and releasing, bending and fixing of the automatic bending type medical patch fixing nail are realized, the structure is ingenious and compact, the operation is flexible and convenient, and the use is safe and reliable.
Description
Technical Field
The invention relates to a trigger operating instrument for a patch fixing nail, in particular to an automatic bending type trigger instrument for a medical patch fixing nail.
Background
With the continuous development of material medicine, more and more novel materials enter the medical field as biomedical materials to repair the defects of all parts of the human body. The medical patch is a human tissue repair material which is widely used in general surgery department and is mainly used for repairing various hernias, such as inguinal hernias, incisional hernias and the like. Due to the particularity of the hernia region, the patch needs to have strong tensile strength without losing softness, and also needs to have a proper shape according to the position of the repaired tissue so as to be stably fixed on the human tissue.
The fixation of the patch in human tissue is the key of hernia repair surgery, and the fixation effect directly affects the success or failure of the surgery and has a key influence on whether the surgery recurs or not. The patch is not firm and is easy to loosen or fall off, the existing hernia repair patch is usually fixed in a clinical suture mode, namely, the patch is fixed on tissue at a plurality of positions of the patch through suture lines, but the suture operation mode has low efficiency, the operation time is prolonged, the operation level requirement on doctors is high, the suture effect is not easy to guarantee, and meanwhile, the recovery of patients is slow. Along with the development of medical instruments, some absorbable patch fixing nails are also available on the market, the fixing nails are used for injecting tissues to fix the hernia repair patch, the human soft tissues can be penetrated and fixed from a plurality of angles and directions, a better fixing effect is achieved, the operation efficiency is improved, the working strength of doctors is reduced, and the pain of patients is also reduced.
Fig. 1 is a novel medical patch fixing nail named "medical patch fixing nail capable of automatically bending and fixing" which is invented and invented by the applicant at 202010146500.1, 3/5/2020, and comprises an implantation part 1 'and a bending part 2', wherein the bending part 2 'is arranged at the tail part of the implantation part 1', the bending part 2 'is provided with at least two bending arms 2-1', circumferentially adjacent bending arms 2-1 'are connected together in a manner of closing towards the center through a connecting structure, and the bending arms 2-1' have bending stress which automatically opens and bends outwards after the connecting structure is disconnected; a notch groove 3 'is arranged at the outer side of the root part of the bending arm 2-1'; the implantation part 1 'is of a nail rod structure with a pointed end 1-1' at the front end, and barbs 1-2 'are arranged on the implantation part 1'; the connecting structure between the bending arms 2-1 ' is a thin wall 2-2 ' arranged between the circumferentially adjacent bending arms 2-1 '. According to the medical patch fixing nail, in the fixing nail firing process, an instrument is used for disconnecting the connecting structure between the adjacent bending arms 2-1 ', namely the thin wall 2-2', and the bending stress of the bending arms 2-1 'which are opened and bent outwards is used for realizing the bending and fastening of the bending arms 2-1' on the medical patch so as to stably fix the medical patch and human tissues.
In order to realize the rapid and stable firing of the medical patch fixing nail capable of automatically bending and fixing, a special firing instrument needs to be designed to realize a series of actions of fixing nail clamping, thin-wall cutting, implanting and releasing automatic bending and fixing.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to provide an automatic bending type medical patch fixing nail firing instrument, which aims to realize a series of actions of clamping, thin-wall cutting, implanting, releasing, bending and fixing and the like of an automatic bending type medical patch fixing nail and meet the requirement for rapid and stable firing of the patch fixing nail.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to an automatic bending type medical patch fixing nail firing instrument, which comprises a handle assembly, a sleeve assembly, a tong head assembly and a reset mechanism, wherein the handle assembly is arranged at one end of the sleeve assembly, the tong head assembly is arranged at the other end of the sleeve assembly, and the reset mechanism is used for resetting after the handle assembly, the sleeve assembly and the tong head assembly are fired, wherein:
the handle assembly comprises a fixed handle, a movable handle, a cam and a cam transmission mechanism, wherein the upper part of the fixed handle is provided with an installation cavity, the upper part of the movable handle is rotatably installed in the installation cavity through a handle rotating shaft, the cam is rotatably installed on the side wall of the installation cavity, and the upper part of the movable handle is in transmission connection with the cam through the cam transmission mechanism and is used for driving the cam to synchronously rotate when the movable handle rotates;
the sleeve assembly comprises an outer sleeve, a tong head push pipe and a cutter push rod, one end of the outer sleeve is arranged at the upper part of the fixed handle, the tong head push pipe is arranged in the outer sleeve in a sliding manner, and the rear end of the tong head push pipe extends into the mounting cavity to be matched with the push part at the upper part of the movable handle; the cutter push rod is slidably arranged in the tong head push pipe, and the rear end of the cutter push rod extends into the mounting cavity to be matched with the cam profile of the cam; when the movable handle rotates, the push of the cam to the cutter push rod lags behind the push of the movable handle to the tong head push pipe;
the binding clip assembly comprises a first binding clip and a second binding clip, the first binding clip and the second binding clip are rotatably arranged at the front end of the outer sleeve, the rear ends of the first binding clip and the second binding clip are respectively in transmission connection with the front end of the binding clip push tube, and the binding clip push tube stretches back and forth to drive the first binding clip and the second binding clip to open or close; the first clamp head and the second clamp head are closed to form a clamping cavity for clamping a patch fixing nail, the front end of the cutter push rod extends out of the clamp head push pipe, and the cutter located in the clamping cavity is fixedly arranged at the front end of the cutter push rod.
Furthermore, the cam transmission mechanism comprises a sector gear and a cam gear, the sector gear is fixedly arranged on the upper part of the movable handle, the circle center of the sector gear is concentric with the rotating shaft of the handle, the cam gear is coaxially and fixedly arranged on the cam, and the cam gear is meshed with the sector gear.
Furthermore, the cam is provided with an arc profile and a pushing profile, the arc profile takes the rotation center of the cam as the center of a circle, the arc profile abuts against the rear end of the cutter push rod in the initial state of percussion, and the cutter push rod is pushed to move forwards by rotating from the arc profile to the pushing profile in the process of percussion.
Furthermore, the reset mechanism comprises a binding clip reset spring and a cutter reset spring, the binding clip reset spring is sleeved on the binding clip push tube, and the binding clip reset spring is positioned between the fixed handle and the binding clip push tube and is used for enabling the rear end of the binding clip push tube to be abutted against the upper part of the movable handle in the installation cavity; the cutter reset spring is sleeved on the cutter push rod and is positioned between the tong head push pipe and the cutter push rod, and the rear end of the cutter push rod is abutted against the cam profile of the cam in the mounting cavity.
Furthermore, the aperture of the front section of the tong head push pipe is smaller than that of the rear section, the diameter of the front section of the cutter push rod is smaller than that of the rear section, the front section of the cutter push rod is in sliding fit with the front section of the tong head push pipe, the rear section of the cutter push rod is in sliding fit with the rear section of the tong head push pipe, and a cavity for mounting a cutter reset spring is reserved between the cutter push rod and the front section and the rear section of the tong head push pipe; the rear end of the tong head push pipe is provided with a boss which is used for being abutted against the pushing part on the upper part of the movable handle, the tong head reset spring is sleeved on the tong head push pipe, the front end of the tong head reset spring is abutted against the front part of the mounting cavity of the fixed handle, and the rear end of the tong head reset spring is abutted against the boss.
Furthermore, the rear end of the tong head push pipe penetrates through the mounting cavity of the fixed handle to extend outwards, the rear end of the cutter push rod is in sliding fit with the rear end of the tong head push pipe, and a half-cutting groove is formed in the matching position of the tong head push pipe, the cutter push rod and the cam.
Furthermore, the first binding clip and the second binding clip of the binding clip assembly are rotatably mounted at the front end of the outer sleeve through rotating shafts respectively, the rear ends of the first binding clip and the second binding clip are respectively provided with a clamping sliding groove, the front end of the binding clip push tube is provided with a push-pull pin positioned in the clamping sliding groove at the corresponding side, and the binding clip push tube slides in the clamping sliding grooves of the first binding clip and the second binding clip through the push-pull pin to drive the first binding clip and the second binding clip to open or close.
Furthermore, the clamping sliding groove is an inclined sliding groove which is arranged at the rear end of the first binding clip and the rear end of the second binding clip respectively and has opposite inclined directions; or the clamping sliding groove is a folding sliding groove which is respectively arranged at the rear ends of the first binding clip and the second binding clip, the folding sliding groove comprises a chute section and a horizontal groove section, the chute section is connected with the horizontal groove section, the chute section is positioned behind the horizontal groove section, and the inclination directions of the chute section on the first binding clip and the second binding clip are opposite.
Still further, a safety mechanism for preventing the movable handle from being triggered by mistake is included.
Furthermore, the safety mechanism comprises a safety handle, a stop lever, a first connecting rod, a second connecting rod, a third connecting rod and a pushing spring, wherein one end of the first connecting rod is hinged with the movable handle, a hinged point of the first connecting rod and the movable handle is positioned below a handle rotating shaft, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is hinged with the fixed handle, one end of the third connecting rod is hinged with a hinged point of the first connecting rod and the second connecting rod, the other end of the third connecting rod is provided with a sliding pin, the sliding pin is slidably arranged in a slide way on the inner side wall of the mounting cavity, and when the movable handle is operated to rotate and fire, the first connecting rod and the second connecting rod drive the sliding pin of the third connecting rod to slide in the slide way; the lower extreme slidable mounting of pin in the spout of movable handle, the upper end of pin extend to the front portion of sliding pin when being in the percussion initial position in the slide, the lower extreme of pin is located to the ejection spring, bumper handle articulate on movable handle, and bumper handle and pin cooperate for drive the pin and move down and remove the stopping of pin on the pin when detaining the bumper handle downwards.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the invention relates to an automatic bending type medical patch fixing nail firing instrument which comprises a handle assembly, a sleeve assembly, a tong head assembly and a reset mechanism, wherein the handle assembly controls the movement of the tong head assembly through the sleeve assembly, a pushing part at the upper part of a movable handle in the handle assembly pushes a tong head push pipe in the sleeve assembly to move so as to drive two tong heads arranged at the front end of an outer sleeve to be closed or opened, a cam is driven to synchronously rotate through a cam transmission mechanism in the firing process of the movable handle, and a cutter push rod in the cam is driven by the cam profile of the cam to move a cutter at the front end of the sleeve assembly to move so as to drive a cutter at the front end of the sleeve assembly to move so as to cut off a; meanwhile, the cam profile characteristics of the cam are utilized to control the pushing of the cam to the cutter push rod to lag behind the pushing of the movable handle to the tong head push tube, so that the tong head can close and clamp the patch fixing nail firstly, then the tail thin wall of the patch fixing nail is quickly cut off or the tail thin wall of the patch fixing nail is cut off while the tong head is completely closed, through the ingenious design and mutual matching of a firing mechanism, the positioning clamping of the tong head on the patch fixing nail and the action of rapidly pushing a cutter to cut off the tail thin wall of the patch fixing nail can be completed through one-time firing action, and a series of actions of clamping, thin wall cutting, implanting and releasing bending and fixing of the automatic bending type medical patch fixing nail are realized, so that the requirement of quick and stable firing of the patch fixing nail is met, the structural design is ingenious and compact, the operation is flexible and;
(2) the cam transmission mechanism of the automatic bending type medical patch fixing nail firing instrument comprises a sector gear and a cam gear, wherein the sector gear is fixedly arranged at the upper part of a movable handle, the circle center of the sector gear is concentric with a handle rotating shaft, the cam gear is coaxially and fixedly arranged on a cam, the cam gear is meshed with the sector gear, and the sector gear is matched with the cam gear to realize action transmission between the movable handle and the cam;
(3) the invention relates to an automatic bending type medical patch fixing nail firing instrument.A cam of the automatic bending type medical patch fixing nail firing instrument is provided with an arc profile and a pushing profile, wherein the arc profile takes the rotating center of the cam as the center of a circle, the arc profile abuts against the rear end of a cutter push rod when the cam is in an initial firing state, and the cutter push rod is pushed to move forwards by rotating from the arc profile to the pushing profile in the firing process; the cutting knife at the initial firing section of the movable handle can not act by utilizing the arc contour, and the cutting is carried out after the two clamp heads of the firing instrument stably clamp the patch fixing nail, so that the firing of the patch fixing nail is more stable and reliable, and the firing success rate and the safety are higher;
(4) according to the automatic bending type medical patch fixing nail firing instrument, the reset mechanism comprises the clamp head reset spring and the cutter reset spring, and the reset spring is used for resetting the instrument after firing, so that the subsequent firing operation is facilitated, and the operation is more convenient and flexible; specifically, the binding clip reset spring is positioned between the fixed handle and the binding clip push tube, and the cutter reset spring is positioned between the binding clip push tube and the cutter push rod, so that the structure is compact, and the assembly is convenient;
(5) according to the automatic bending type medical patch fixing nail firing instrument, the rear end of a forceps head push tube penetrates through a mounting cavity of a fixing handle to extend outwards, the rear end of a cutter push rod is in sliding fit with the rear end of the forceps head push tube, and a half-cutting groove is formed in the matching part of the forceps head push tube and the cutter push rod with a cam; by adopting the structure, the tong head push pipe can be in more stable sliding fit with the fixed handle, so that the smooth sliding of the tong head push pipe and the cutter push rod is ensured, and meanwhile, the tong head push pipe has better sliding fit precision and sliding stability;
(6) according to the automatic bending type medical patch fixing nail firing instrument, the rear ends of a first tong head and a second tong head are respectively provided with a clamping sliding groove, the front end of a tong head push pipe is provided with a push-pull pin positioned in the clamping sliding groove on the corresponding side, and the tong head push pipe slides in the clamping sliding grooves of the first tong head and the second tong head through the push-pull pin to drive the first tong head and the second tong head to open or close; the clamping sliding groove can be designed into an inclined sliding groove or a folded sliding groove which is arranged at the rear end of the first binding clip and the rear end of the second binding clip and has opposite inclination directions, the first binding clip and the second binding clip can completely close and clamp the patch fixing nail and simultaneously complete the cutting of the thin wall at the tail part of the patch fixing nail by utilizing the inclined sliding groove design, and the firing efficiency is high; after the first tong head and the second tong head can completely close and clamp the patch fixing nail by utilizing the fold-shaped sliding chute, the thin wall at the tail part of the patch fixing nail is cut off by utilizing the cutter, the clamping and cutting-off actions are finished in sequence, and the stability of the firing action is good;
(7) the automatic bending type medical patch fixing nail firing instrument further comprises a safety mechanism for preventing a movable handle from being triggered mistakenly, the safety mechanism adopts the hinged connection of three connecting rods as an action element, and utilizes a stop lever controlled by a safety handle to realize the locking or unlocking of the action of the connecting rods, so that the firing operation can be completed only by firstly buckling the safety handle to unlock the instrument when the instrument is fired, the misoperation of the instrument is effectively prevented, and the use safety of the instrument is improved; and the safety mechanism has simple and compact structure and flexible and convenient operation.
Drawings
FIG. 1 is a schematic structural view of an automatically bendable medical patch anchor;
FIG. 2 is a schematic perspective view of an automatic bending type medical patch fixing nail firing instrument according to the present invention;
FIG. 3 is a schematic top view of an automatic bending type medical patch staple firing instrument of the present invention;
FIG. 4 is a schematic view of the internal structure of the present invention in the initial state of firing with a stepped cross-sectional view taken along the line A-A in FIG. 3;
FIG. 5 is a schematic view of the internal structure of the initial firing section with the closed head of the present invention shown in a cross-sectional view taken along the A-A direction of FIG. 3;
FIG. 6 is a schematic view of the internal structure of the cutter at the front stage of the percussion stage in the step cross-sectional view along the direction A-A in FIG. 3;
FIG. 7 is a schematic view of a cam structure according to the present invention;
FIG. 8 is a schematic view of a half-notch structure of the cutter push rod and the clamp head push tube at the position of the cam according to the present invention;
FIG. 9 is a schematic view of the safety mechanism of the present invention;
FIG. 10 is a partial schematic structural view of a forcep head assembly according to embodiment 1 of the present invention;
fig. 11 is a partial structural schematic view of the binding clip assembly according to embodiment 2 of the present invention.
The reference numerals in the schematic drawings illustrate:
1', an implant part; 1-1', pointed; 1-2', barbs; 2', a bending part; 2-1', a bending arm; 2-2', thin wall; 3', a gap groove;
1. a handle assembly; 1-1, fixing a handle; 1-1a, installing a cavity; 1-1b, a slideway; 1-2, a movable handle; 1-2a, a handle rotating shaft; 1-2b, a pushing part; 1-3, a sector gear; 1-4, a cam; 1-4a, a circular arc profile; 1-4b, push profile; 1-5, cam gear; 2. a bushing assembly; 2-1, outer sleeve; 2-2, pushing the pipe by using a tong head; 2-2a, a boss; 2-2b, a push-pull pin; 2-3, a cutter push rod; 2-3a, cutting knife; 2-3b, avoiding holes; 2-3c, half cutting; 2-4, a tong head return spring; 2-5, a cutter reset spring; 3. a tong head assembly; 3-1, a first tong head; 3-2, a second tong head; 3-3, a rotating shaft; 3-4, clamping and closing the sliding groove; 3-4a, a chute section; 3-4b, a horizontal groove section; 4. a safety mechanism; 4-1, a safety handle; 4-2, a stop lever; 4-3, a first connecting rod; 4-4, a second connecting rod; 4-5, a third connecting rod; 4-5a, a sliding pin; 4-6, pushing the spring.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
[ example 1]
The present embodiment of an automatic bending type medical patch fixing nail firing instrument is a special clip applier for an automatic bending type medical patch fixing nail shown in fig. 1. The automatic bending type medical patch fixing nail consists of an implantation part 1 'and a bending part 2', wherein the front end of the implantation part 1 'is provided with a pointed end 1-1' for penetrating into tissues, the implantation part 1 'is provided with a barb 1-2' for being stably fixed on the tissues, the bending part 2 'is arranged at the tail part of the implantation part 1', the bending part 2 'is provided with at least two bending arms 2-1', the circumferentially adjacent bending arms 2-1 'are connected through a thin wall 2-2' to form a columnar structure, and each bending arm 2-1 'has bending stress which automatically opens and bends outwards after the thin wall 2-2' is cut off, so that each bending arm 2-1 'can open outwards to fix the patch after the thin wall 2-2' is cut off. According to the structure of the automatic bending type medical patch fixing nail, the firing action of the patch fixing nail at least comprises a series of actions of clamping the patch fixing nail, cutting off the thin wall, implanting tissues and releasing the fixing nail to enable the fixing nail to be automatically bent and fixed.
In order to satisfy the above-mentioned trigger action, as shown in fig. 2 and 3, the automatic bending type medical patch fixing nail trigger instrument of the embodiment includes a handle assembly 1, a sleeve assembly 2, a forceps head assembly 3 and a reset mechanism, the handle assembly 1 is disposed at one end of the sleeve assembly 2, the forceps head assembly 3 is disposed at the other end of the sleeve assembly 2, the handle assembly 1 controls the forceps head assembly 3 to move through the sleeve assembly 2, and the reset mechanism is used for resetting after the handle assembly 1, the sleeve assembly 2 and the forceps head assembly 3 are triggered. Referring to fig. 4, 5 and 6 in detail, the handle assembly 1 includes a fixed handle 1-1, a movable handle 1-2, a cam 1-4 and a cam transmission mechanism, the fixed handle 1-1 is used as a main grasping body structure, other components are mounted by the fixed handle 1-1, the upper portion of the fixed handle 1-1 is provided with a mounting cavity 1-1a, for mounting convenience, the fixed handle 1-1 preferably adopts a two-half assembly structure, the upper portion of the movable handle 1-2 is rotatably mounted in the mounting cavity 1-1a through a handle rotating shaft 1-2a, the movable handle 1-2 can be operated to rotate backwards by holding the fixed handle 1-1 and the movable handle 1-2 with one hand, the cam 1-4 is rotatably mounted on the side wall of the mounting cavity 1-1a, the upper part of the movable handle 1-2 is in transmission connection with the cam 1-4 through a cam transmission mechanism and is used for driving the cam 1-4 to synchronously rotate when the movable handle 1-2 rotates. The sleeve assembly 2 comprises an outer sleeve 2-1, a tong head push tube 2-2 and a cutter push rod 2-3, the outer sleeve 2-1 is used as a connecting piece of the fixed handle 1-1 and the tong head assembly 3, one end of the outer sleeve 2-1 is arranged on the upper part of the fixed handle 1-1 to form a shape similar to a 'pistol', the tong head push tube 2-2 is arranged in the outer sleeve 2-1 in a sliding manner, the rear end of the tong head push tube 2-2 extends into the mounting cavity 1-1a to be matched with a push part 1-2b on the upper part of the movable handle 1-2, and when the movable handle 1-2 is operated to rotate backwards, the push part 1-2b rotates forwards relatively to push the tong head push tube 2-2 to move forwards; the cutter push rod 2-3 is slidably arranged in the tong head push pipe 2-2, the rear end of the cutter push rod 2-3 extends into the mounting cavity 1-1a and is matched with the cam profile of the cam 1-4, when the movable handle 1-2 rotates backwards, the cam 1-4 can be driven to rotate together through the cam transmission mechanism, and the cutter push rod 2-3 can be pushed to move relative to the tong head push pipe 2-2 by utilizing the profile surface of the cam 1-4; when the movable handle 1-2 rotates, the pushing of the cam 1-4 to the cutter push rod 2-3 lags behind the pushing of the movable handle 1-2 to the tong head push pipe 2-2, so that the thin wall of the fixing nail can be cut off after the fixing nail of the patch is clamped. The binding clip assembly 3 comprises a first binding clip 3-1 and a second binding clip 3-2, the first binding clip 3-1 and the second binding clip 3-2 are rotatably mounted on the front end of the outer sleeve 2-1, specifically, as shown in fig. 2 and 3, two support arms are provided on the front end of the outer sleeve 2-1, the first binding clip 3-1 and the second binding clip 3-2 are respectively mounted on the two support arms on the front end of the outer sleeve 2-1 through a rotating shaft 3-3, and can rotate around the rotating shaft 3-3 to close or open. The rear ends of the first tong head 3-1 and the second tong head 3-2 are respectively in transmission connection with the front end of the tong head push pipe 2-2, and the first tong head 3-1 and the second tong head 3-2 are driven to open or close by the fore-and-aft telescopic motion of the tong head push pipe 2-2; specifically, in this embodiment, the rear ends of the first binding clip 3-1 and the second binding clip 3-2 are respectively provided with a clamping sliding slot 3-4, the clamping sliding slots 3-4 on the first binding clip 3-1 and the second binding clip 3-2 are opposite in inclination direction, the front end of the binding clip push tube 2-2 is provided with a push-pull pin 2-2b located in the corresponding side clamping sliding slot 3-4, and the binding clip push tube 2-2 slides in the clamping sliding slots 3-4 of the first binding clip 3-1 and the second binding clip 3-2 through the push-pull pin 2-2b to drive the first binding clip 3-1 and the second binding clip 3-2 to open or close. As shown in fig. 10, the clamping sliding groove 3-4 is an inclined sliding groove which is arranged at the rear end of the first binding clip 3-1 and the rear end of the second binding clip 3-2 and has opposite inclination directions, the inclined sliding groove is a straight groove which is inclined relative to the axis of the binding clip pushing tube 2-2, the pushing pin 2-2b can drive the two binding clips to close or open when moving back and forth in the inclined sliding groove, the first binding clip 3-1 and the second binding clip 3-2 can close and clamp the patch fixing nail firstly by utilizing the inclined sliding groove design, then the cutter pushing rod 2-3 is controlled to move forwards while the first binding clip 3-1 and the second binding clip 3-2 are continuously closed, the thin wall at the tail of the patch fixing nail is cut off when the patch fixing nail is completely closed and clamped, and the firing efficiency is high. The first binding clip 3-1 and the second binding clip 3-2 are closed to form a clamping cavity for clamping the patch fixing nail, namely, the first binding clip 3-1 and the second binding clip 3-2 are respectively provided with a semi-cylindrical groove, a positioning structure for positioning the patch fixing nail is also arranged in the clamping cavity, the positioning structure can be designed into a convex edge or a groove which is arranged along the axial direction, and the outer wall of the patch fixing nail is correspondingly provided with a positioning groove or a positioning rib, so that the patch fixing nail is accurately positioned in the clamping cavity. The front end of the cutter push rod 2-3 extends out of the tong head push tube 2-2, the cutter 2-3a is fixedly arranged at the front end of the cutter push rod 2-3, the shape of the cutter 2-3a corresponds to the shape of a notch at the tail part of the patch fixing nail, and if the tail part of the patch fixing nail in the figure 1 is a cross-shaped notch, the cutter 2-3a is preferably designed into a cross-shaped cutter so as to correspond to the position of the corresponding thin wall 2-2 ', and the cutting of the thin wall 2-2' at the tail part of the patch fixing nail by the forward movement of the cutter 2-3a is realized. The rotating shaft 3-3 preferably adopts a through pin shaft structure, and in order to avoid the rotating shaft 3-3, the tail part of the cutter 2-3a is also provided with a strip-shaped avoiding hole 2-3b for the rotating shaft 3-3 to pass through.
In the embodiment, the movable handle 1-2 and the cam 1-4 can be driven by various structural forms, and the cam 1-4 is driven to rotate together only by the rotation of the movable handle 1-2. As a preferred embodiment, as shown in fig. 4 to 6 and 9, in the present embodiment, the cam transmission mechanism comprises a sector gear 1-3 and a cam gear 1-5, the sector gear 1-3 is fixedly arranged at the upper part of the movable handle 1-2, the circle center of the sector gear 1-3 is concentric with the handle rotating shaft 1-2a, when the movable handle 1-2 rotates around the handle rotating shaft 1-2a, the sector gear 1-3 is driven to synchronously rotate, the cam gear 1-5 is coaxially and fixedly arranged on the cam 1-4, the cam gear 1-5 is meshed with the sector gear 1-3, therefore, the cam 1-4 is driven to rotate by the rotation of the movable handle 1-2 through the matching of the sector gear 1-3 and the cam gear 1-5, and only the proper transmission ratio between the sector gear 1-3 and the cam gear 1-5 needs to be set. By adopting the cam transmission mechanism, the sector gear 1-3 is matched with the cam gear 1-5 to realize the action transmission between the movable handle 1-2 and the cam 1-4, the structure is simple and compact, and the transmission is stable and reliable.
As shown in FIG. 7, in the present embodiment, the cam 1-4 has an arc profile 1-4a and a pushing profile 1-4b, the arc profile 1-4a uses the rotation center of the cam 1-4 as the center of circle, the arc profile 1-4a abuts against the rear end of the cutter push rod 2-3 when the cam 1-4 is in the initial state of firing, and the cutter push rod 2-3 is pushed to move forward by the arc profile 1-4a rotating to the pushing profile 1-4b during the firing process. The arc profiles 1-4a and the pushing profiles 1-4b can adopt smooth transition or plane transition, when the arc profiles 1-4a of the cams 1-4 are abutted against the rear ends of the cutter push rods 2-3, the cams 1-4 rotate to not push the cutter push rods 2-3 to move, and when the cutter push rods 2-3 pass through the arc profiles 1-4a, the distances from the pushing profiles 1-4b to the rotating centers of the cams 1-4 are gradually increased, so that the pushing profiles 1-4b push the cutter push rods 2-3 to move forwards along with the rotation of the cams 1-4. By adopting the cams 1-4 and utilizing the arc profiles 1-4a, the primary trigger cutter of the movable handle 1-2 can not act, and the two clamp heads of the trigger instrument can be ensured to stably clamp the patch fixing nail and then cut off, so that the trigger of the patch fixing nail is more stable and reliable, and the trigger success rate and the safety are higher.
In this embodiment, the reset mechanism may be a spring or a torsion spring disposed at a rotational position, and only needs to ensure that the tong head push tube 2-2 and the cutter push rod 2-3 can reset backwards after being triggered. As shown in fig. 4 to 6, as a preferred embodiment, the above-mentioned reset mechanism includes a binding clip reset spring 2-4 and a cutter reset spring 2-5, the binding clip reset spring 2-4 is sleeved on the binding clip push tube 2-2, and the binding clip reset spring 2-4 is located between the fixed handle 1-1 and the binding clip push tube 2-2, so as to make the rear end of the binding clip push tube 2-2 abut against the upper portion of the movable handle 1-2 in the installation cavity 1-1 a; the cutter reset spring 2-5 is sleeved on the cutter push rod 2-3, and the cutter reset spring 2-5 is positioned between the tong head push pipe 2-2 and the cutter push rod 2-3 and used for enabling the rear end of the cutter push rod 2-3 to be abutted against the cam profile of the cam 1-4 in the installation cavity 1-1 a. Specifically, the aperture of the front section of the tong head push pipe 2-2 is smaller than that of the rear section, the diameter of the front section of the cutter push rod 2-3 is smaller than that of the rear section, the front section of the cutter push rod 2-3 is in sliding fit with the front section of the tong head push pipe 2-2, the rear section of the cutter push rod 2-3 is in sliding fit with the rear section of the tong head push pipe 2-2, a cavity for mounting a cutter return spring 2-5 is reserved between the front section and the rear section of the cutter push rod 2-3 and the tong head push pipe 2-2, the front end of the cutter return spring 2-5 abuts against the step of the tong head push pipe 2-2, the rear end of the cutter return spring 2-5 abuts against the step of the cutter push rod 2-3, and the cutter push rod 2-3 tends to return backwards due to elastic force generated by compression of the cutter return spring 2-5, so that the rear end of the cutter push rod 2-3 is in stable contact with the cam profile of. The rear end of the tong head push pipe 2-2 is provided with a boss 2-2a which is used for abutting against the push part 1-2b at the upper part of the movable handle 1-2, the tong head reset spring 2-4 is sleeved on the tong head push pipe 2-2, the front end of the tong head reset spring 2-4 abuts against the front part of the installation cavity 1-1a of the fixed handle 1-1, the rear end of the tong head reset spring 2-4 abuts against the boss 2-2a, and the rear end of the tong head push pipe 2-2 stably abuts against the push part 1-2b at the upper part of the movable handle 1-2 due to the elastic force generated by the compression of the tong head reset spring 2-4. By adopting the reset mechanism, the reset after the trigger of the instrument is realized by utilizing the reset spring so as to facilitate the subsequent trigger operation, the operation is more convenient and flexible, and the reset mechanism has compact structure and convenient assembly. In order to ensure the stable sliding of the tong head push pipe 2-2 and the cutter push rod 2-3, in the embodiment, the rear ends of the tong head push pipe 2-2 and the cutter push rod 2-3 are also matched in a guiding way, namely, the rear end of the forceps head push tube 2-2 passes through the mounting cavity 1-1a of the fixed handle 1-1 and extends outwards, the rear end of the cutter push rod 2-3 is in sliding fit with the rear end of the forceps head push tube 2-2, and a half cutting groove 2-3c is arranged at the matching part of the tong head push pipe 2-2 and the cutter push rod 2-3 and the cam 1-4, the structure of the half cutting groove 2-3c is shown in figure 8, the cam 1-4 is positioned in the half cutting groove 2-3c, the front end of the half cutting groove 2-3c of the cutter push rod 2-3 is matched with the cam profile of the cam 1-4, and the cutter push rod 2-3 can be pushed to move by the rotation of the cam 1-4. By adopting the structure, the tong head push pipe 2-2 can be in more stable sliding fit with the fixed handle 1-1, so that the tong head push pipe 2-2 and the cutter push rod 2-3 are ensured to slide smoothly, and meanwhile, the tong head push pipe has better sliding fit precision and sliding stability.
The automatic bending type medical patch fixing nail firing instrument further comprises a safety mechanism 4 for preventing the movable handle 1-2 from being triggered by mistake. Specifically, as shown in fig. 9, the safety mechanism 4 in this embodiment includes a safety handle 4-1, a stop lever 4-2, a first link 4-3, a second link 4-4, a third link 4-5, and a push spring 4-6, wherein one end of the first link 4-3 is hinged to the movable handle 1-2, a hinge point of the first link 4-3 and the movable handle 1-2 is located below a handle rotation shaft 1-2a, the other end of the first link 4-3 is hinged to one end of the second link 4-4, the other end of the second link 4-4 is hinged to the fixed handle 1-1, one end of the third link 4-5 is hinged to a hinge point of the first link 4-3 and the second link 4-4, the other end of the third link 4-5 is provided with a sliding pin 4-5a, the sliding pin 4-5a is slidably mounted in a slideway 1-1b on the inner side wall of the mounting cavity 1-1a, the first connecting rod 4-3, the second connecting rod 4-4 and the third connecting rod 4-5 are hinged to form a support rod structure, and when the movable handle 1-2 is operated to rotate and trigger, a hinged point of the first connecting rod 4-3 and the second connecting rod 4-4 moves upwards to drive the sliding pin 4-5a of the third connecting rod 4-5 to slide in the slideway 1-1 b; the sliding pin 4-5a of the third connecting rod 4-5 is limited to slide, so that the movable handle 1-2 can not rotate. The lower end of the stop lever 4-2 is slidably arranged in a sliding groove of the movable handle 1-2, the upper end of the stop lever 4-2 extends to the front part of the sliding pin 4-5a at the initial position of percussion in the sliding way 1-1b, and the ejection spring 4-6 is arranged at the lower end of the stop lever 4-2, so that the stop lever 4-2 is utilized to block the forward sliding path of the sliding pin 4-5a, thereby playing the role of preventing the misoperation of the movable handle 1-2; in order to facilitate unlocking, the safety handle 4-1 is hinged to the movable handle 1-2, and the safety handle 4-1 is matched with the blocking rod 4-2 and used for driving the blocking rod 4-2 to move downwards to release the blocking of the upper end of the blocking rod 4-2 on the sliding pin 4-5a when the safety handle 4-1 is buckled downwards. Specifically, a step can be arranged at the matching position of the stop lever 4-2 and the safety handle 4-1, the safety handle 4-1 is positioned above the step, when the safety handle 4-1 is pressed, the safety handle 4-1 can press the stop lever 4-2 downwards through the step, so that the stop lever 4-2 moves downwards, a sliding channel of the sliding pin 4-5a is formed, and the movable handle 1-2 can be triggered to operate. The safety mechanism 4 utilizes the stop lever 4-2 controlled by the safety handle 4-1 to realize the locking or unlocking of the action of the connecting rod, so that the triggering operation can be completed only by firstly buckling the safety handle 4-1 to unlock the safety mechanism when the instrument is triggered, the misoperation of the instrument is effectively prevented, and the use safety of the instrument is improved; and the safety mechanism has simple and compact structure and flexible and convenient operation.
[ example 2]
The basic structure of the automatic bending type medical patch fixing nail firing instrument of the embodiment is the same as that of the embodiment 1, except that: as shown in fig. 11, in the present embodiment, the clipping sliding groove 3-4 is a folded sliding groove respectively disposed at the rear ends of the first binding clip 3-1 and the second binding clip 3-2, the folded sliding groove includes a chute section 3-4a and a horizontal groove section 3-4b, the chute section 3-4a is connected to the horizontal groove section 3-4b, the chute section 3-4a is located behind the horizontal groove section 3-4b, and the inclined directions of the chute section 3-4a on the first binding clip 3-1 and the second binding clip 3-2 are opposite. By adopting the design of the folded sliding chute, the push-pull pin 2-2b can drive the two tong heads to close or open when moving back and forth in the folded sliding chute, the push-pull pin 2-2b can control the first tong head 3-1 and the second tong head 3-2 to be completely closed in the chute section 3-4a, the horizontal groove section 3-4b can provide a stroke for enabling the cutter push rod 2-3 to continuously move forward for cutting off after the tong heads are closed, the folded sliding chute can be utilized to realize that the first tong head 3-1 and the second tong head 3-2 are completely closed to clamp the patch fixing nail, then the cutter is utilized to cut off the thin wall at the tail part of the patch fixing nail, the clamping and cutting-off actions can be successively completed, and the stability of the firing action is good.
In order to better understand the technical solution of the present invention, the working principle of the automatic bending type medical patch fixing nail firing instrument of the present invention will be further explained with reference to fig. 4 to 6. The automatic bending type medical patch fixing nail firing instrument is in an initial state as shown in figure 4, and when in use, the fixing handle 1-1 is held by one hand to clamp the patch fixing nail between the first tong head 3-1 and the second tong head 3-2, after the positioning position is aligned, the forefinger downwards buckles a safety handle 4-1 of a safety mechanism 4, the movable handle 1-2 is grasped and rotated, the movable handle 1-2 rotates to push a tong head push pipe 2-2 to move forwards through a pushing part 1-2b at the upper part of the movable handle, a push-pull pin 2-2b at the front part of the tong head push pipe 2-2 moves forwards, a clamping sliding groove 3-4 is utilized to drive a first tong head 3-1 and a second tong head 3-2 to synchronously rotate around a rotating shaft 3-3 to close so as to clamp a patch fixing nail, and the action process is shown in fig. 5; further grasping the movable handle 1-2, driving the cam 1-4 to further rotate through the sector gear 1-3 in cooperation with the cam gear 1-5 along with the rotation of the movable handle 1-2, driving the cutter push rod 2-3 to move forward through the rotation of the cam 1-4 so that the pushing profile 1-4b on the cam 1-4 rotates, driving the cutter 2-3a at the front end of the cutter push rod 2-3 to move forward, and cutting off the thin-wall structure at the tail part of the patch fixing nail as shown in figure 6, wherein the cutting-off action can be completed when or after the two forceps heads are completely closed; keeping the movable handle 1-2 not to be loosened, then operating an instrument to implant the front part of the patch fixing nail into the tissue on which the patch is placed, then loosening the movable handle 1-2, opening the first forceps head 3-1 and the second forceps head 3-2 under the elastic reset action, then separating the tail part of the patch fixing nail from being bound, opening outwards under the stress action, and fixing the patch on the tissue by utilizing the bent arm.
According to the automatic bending type medical patch fixing nail firing instrument, through the ingenious design and mutual matching of the firing mechanism, the positioning clamping of the binding clip on the patch fixing nail and the action of rapidly pushing the cutter to cut off the thin wall at the tail part of the patch fixing nail by the cutter can be completed through one firing action, a series of actions of clamping, thin wall cutting, implanting, releasing, bending and fixing and the like of the automatic bending type medical patch fixing nail are realized, the rapid and stable firing of the patch fixing nail is met, the structural design is ingenious and compact, the operation is flexible and convenient, and the use is safe and reliable.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "up," "down," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. The utility model provides an automatic medical patch staple firing apparatus of formula of buckling, includes handle components (1), sleeve subassembly (2), binding clip subassembly (3) and canceling release mechanical system, handle components (1) locate the one end of sleeve subassembly (2), binding clip subassembly (3) locate the other end of sleeve subassembly (2), canceling release mechanical system reset its characterized in that after being used for handle components (1), sleeve subassembly (2) and binding clip subassembly (3) to fire:
the handle assembly (1) comprises a fixed handle (1-1), a movable handle (1-2), a cam (1-4) and a cam transmission mechanism, wherein the upper part of the fixed handle (1-1) is provided with an installation cavity (1-1a), the upper part of the movable handle (1-2) is rotatably installed in the installation cavity (1-1a) through a handle rotating shaft (1-2a), the cam (1-4) is rotatably installed on the side wall of the installation cavity (1-1a), and the upper part of the movable handle (1-2) is in transmission connection with the cam (1-4) through the cam transmission mechanism and is used for driving the cam (1-4) to synchronously rotate when the movable handle (1-2) rotates;
the sleeve assembly (2) comprises an outer sleeve (2-1), a tong head push pipe (2-2) and a cutter push rod (2-3), one end of the outer sleeve (2-1) is arranged at the upper part of the fixed handle (1-1), the tong head push pipe (2-2) is arranged in the outer sleeve (2-1) in a sliding manner, and the rear end of the tong head push pipe (2-2) extends into the mounting cavity (1-1a) to be matched with a push part (1-2b) at the upper part of the movable handle (1-2); the cutter push rod (2-3) is arranged in the tong head push pipe (2-2) in a sliding manner, and the rear end of the cutter push rod (2-3) extends into the mounting cavity (1-1a) to be matched with the cam profile of the cam (1-4); when the movable handle (1-2) rotates, the push of the cam (1-4) to the cutter push rod (2-3) lags behind the push of the movable handle (1-2) to the tong head push pipe (2-2);
the clamp head assembly (3) comprises a first clamp head (3-1) and a second clamp head (3-2), the first clamp head (3-1) and the second clamp head (3-2) are rotatably mounted at the front end of the outer sleeve (2-1), the rear ends of the first clamp head (3-1) and the second clamp head (3-2) are respectively in transmission connection with the front end of the clamp head push pipe (2-2), and the first clamp head (3-1) and the second clamp head (3-2) are driven to open or close by the front-back telescopic motion of the clamp head push pipe (2-2); the first clamp head (3-1) and the second clamp head (3-2) are closed to form a clamping cavity for clamping a patch fixing nail, the front end of the cutter push rod (2-3) extends out of the clamp head push tube (2-2), and the front end of the cutter push rod (2-3) is fixedly provided with a cutter (2-3a) located in the clamping cavity.
2. The automated flexed medical patch staple firing instrument of claim 1, wherein: the cam transmission mechanism comprises a sector gear (1-3) and a cam gear (1-5), the sector gear (1-3) is fixedly arranged at the upper part of the movable handle (1-2), the circle center of the sector gear (1-3) is concentric with the handle rotating shaft (1-2a), the cam gear (1-5) is coaxially and fixedly arranged on the cam (1-4), and the cam gear (1-5) is meshed with the sector gear (1-3).
3. The automated flexed medical patch staple firing instrument of claim 2, wherein: the cam (1-4) is provided with an arc profile (1-4a) and a pushing profile (1-4b), the arc profile (1-4a) takes the rotating center of the cam (1-4) as the center of a circle, the arc profile (1-4a) abuts against the rear end of the cutter push rod (2-3) when the cam (1-4) is in the initial firing state, and the cutter push rod (2-3) is pushed to move forwards by the rotation of the arc profile (1-4a) to the pushing profile (1-4b) in the firing process.
4. The automated flexed medical patch staple firing instrument of claim 3, wherein: the reset mechanism comprises a tong head reset spring (2-4) and a cutter reset spring (2-5), the tong head reset spring (2-4) is sleeved on the tong head push pipe (2-2), and the tong head reset spring (2-4) is positioned between the fixed handle (1-1) and the tong head push pipe (2-2) and is used for enabling the rear end of the tong head push pipe (2-2) to be abutted against the upper part of the movable handle (1-2) in the mounting cavity (1-1 a); the cutter reset spring (2-5) is sleeved on the cutter push rod (2-3), and the cutter reset spring (2-5) is located between the tong head push pipe (2-2) and the cutter push rod (2-3) and used for enabling the rear end of the cutter push rod (2-3) to abut against the cam profile of the cam (1-4) in the installation cavity (1-1 a).
5. The automated flexed medical patch staple firing instrument of claim 4, wherein: the aperture of the front section of the tong head push pipe (2-2) is smaller than that of the rear section, the diameter of the front section of the cutter push rod (2-3) is smaller than that of the rear section, the front section of the cutter push rod (2-3) is in sliding fit with the front section of the tong head push pipe (2-2), the rear section of the cutter push rod (2-3) is in sliding fit with the rear section of the tong head push pipe (2-2), and a cavity for mounting a cutter reset spring (2-5) is reserved between the front section and the rear section of the cutter push rod (2-3) and the tong head push pipe (2-2); the rear end of the tong head push pipe (2-2) is provided with a boss (2-2a) which is used for abutting against a pushing part (1-2b) at the upper part of the movable handle (1-2), the tong head reset spring (2-4) is sleeved on the tong head push pipe (2-2), the front end of the tong head reset spring (2-4) abuts against the front part of the installation cavity (1-1a) of the fixed handle (1-1), and the rear end of the tong head reset spring (2-4) abuts against the boss (2-2 a).
6. The automated flexed medical patch staple firing instrument of claim 4, wherein: the rear end of the tong head push pipe (2-2) penetrates through the mounting cavity (1-1a) of the fixed handle (1-1) to extend outwards, the rear end of the cutter push rod (2-3) is in sliding fit with the rear end of the tong head push pipe (2-2), and a half-cutting groove (2-3c) is formed in the matching position of the tong head push pipe (2-2), the cutter push rod (2-3) and the cam (1-4).
7. The automated flexed medical patch staple firing instrument of claim 1, wherein: the first binding clip (3-1) and the second binding clip (3-2) of the binding clip assembly (3) are rotatably mounted at the front end of the outer sleeve through rotating shafts (3-3), the rear ends of the first binding clip (3-1) and the second binding clip (3-2) are respectively provided with a clamping sliding chute (3-4), the front end of the binding clip push tube (2-2) is provided with a push-pull pin (2-2b) positioned in the corresponding side clamping sliding chute (3-4), and the binding clip push tube (2-2) slides in the clamping sliding chute (3-4) of the first binding clip (3-1) and the second binding clip (3-2) through the push-pull pin (2-2b) to drive the first binding clip (3-1) and the second binding clip (3-2) to open or close.
8. The automated flexed medical patch staple firing instrument of claim 7, wherein: the clamping sliding grooves (3-4) are inclined sliding grooves which are arranged at the rear ends of the first binding clip (3-1) and the second binding clip (3-2) respectively and have opposite inclination directions; or the clamping sliding groove (3-4) is a folded sliding groove which is respectively arranged at the rear ends of the first tong head (3-1) and the second tong head (3-2), the folded sliding groove comprises a chute section (3-4a) and a horizontal groove section (3-4b), the chute section (3-4a) is connected with the horizontal groove section (3-4b), the chute section (3-4a) is positioned behind the horizontal groove section (3-4b), and the inclined directions of the chute section (3-4a) on the first tong head (3-1) and the second tong head (3-2) are opposite.
9. The automated bendable medical patch staple firing instrument of any one of claims 1 to 8, wherein: the safety device also comprises a safety mechanism (4) for preventing the movable handle (1-2) from being triggered by mistake.
10. The automated flexed medical patch staple firing instrument of claim 9, wherein: the safety mechanism (4) comprises a safety handle (4-1), a stop lever (4-2), a first connecting rod (4-3), a second connecting rod (4-4), a third connecting rod (4-5) and a push spring (4-6), one end of the first connecting rod (4-3) is hinged with the movable handle (1-2), the hinged point of the first connecting rod (4-3) and the movable handle (1-2) is positioned below a handle rotating shaft (1-2a), the other end of the first connecting rod (4-3) is hinged with one end of the second connecting rod (4-4), the other end of the second connecting rod (4-4) is hinged with the fixed handle (1-1), one end of the third connecting rod (4-5) is hinged with the hinged point of the first connecting rod (4-3) and the second connecting rod (4-4), the other end of the third connecting rod (4-5) is provided with a sliding pin (4-5a), the sliding pin (4-5a) is installed in a sliding way (1-1b) on the inner side wall of the installation cavity (1-1a) in a sliding way, and when the movable handle (1-2) is operated to rotate and trigger, the first connecting rod (4-3) and the second connecting rod (4-4) drive the sliding pin (4-5a) of the third connecting rod (4-5) to slide in the sliding way (1-1 b); the lower end of the stop lever (4-2) is slidably mounted in a sliding groove of the movable handle (1-2), the upper end of the stop lever (4-2) extends to the front part of the sliding pin (4-5a) in the sliding way (1-1b) when the sliding pin is at the initial triggering position, the ejection spring (4-6) is arranged at the lower end of the stop lever (4-2), the safety handle (4-1) is hinged on the movable handle (1-2), and the safety handle (4-1) is matched with the stop lever (4-2) and used for driving the stop lever (4-2) to move downwards to remove the blocking of the sliding pin (4-5a) by the upper end of the stop lever (4-2) when the safety handle (4-1) is buckled downwards.
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| CN202010396602.9A CN111568485B (en) | 2020-05-12 | 2020-05-12 | Automatic medical patch staple firing apparatus of formula of buckling |
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| CN202010396602.9A CN111568485B (en) | 2020-05-12 | 2020-05-12 | Automatic medical patch staple firing apparatus of formula of buckling |
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| CN105073036A (en) * | 2013-03-15 | 2015-11-18 | 伊西康内外科公司 | Surgical instrument with multiple clamping mechanisms |
| CN106618655A (en) * | 2017-02-27 | 2017-05-10 | 苏州法兰克曼医疗器械有限公司 | Surgical cutting anastomat for stitching-then-cutting |
| CN209107463U (en) * | 2018-06-22 | 2019-07-16 | 无锡博康医疗器械有限公司 | Novel anal-intestinal stapler |
| CN210447139U (en) * | 2019-04-29 | 2020-05-05 | 西安医学院第二附属医院 | Multifunctional abdominal cavity separating forceps |
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Address after: 213023, Ziwei Road, economic development zone, Changzhou, Jiangsu, 10 Applicant after: Jiangsu Sanlian Xinghai Medical Equipment Co., Ltd Address before: 213014 No.10 Ziwei Road, Zhonglou Economic Development Zone, Changzhou City, Jiangsu Province Applicant before: SINOLINKS MEDICAL INNOVATION, Inc. |
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