CN112155660A - Forceps for partially removing aortic valve leaflets - Google Patents
Forceps for partially removing aortic valve leaflets Download PDFInfo
- Publication number
- CN112155660A CN112155660A CN202011151502.6A CN202011151502A CN112155660A CN 112155660 A CN112155660 A CN 112155660A CN 202011151502 A CN202011151502 A CN 202011151502A CN 112155660 A CN112155660 A CN 112155660A
- Authority
- CN
- China
- Prior art keywords
- head
- forceps
- guide wire
- tail
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/285—Surgical forceps combined with cutting implements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/282—Jaws
-
- 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
- A61B17/3205—Excision instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
Abstract
The invention discloses a pair of forceps for cutting off a part of aortic valve leaflets for transcatheter intervention. The key points of the technical scheme are as follows: the pliers are divided into two parts of pliers tail and pliers head, and the pliers contain control guide wire. The forceps tail is of a long catheter structure and internally comprises a guide wire guide cavity and a control wire guide cavity. The pliers head is designed by two foldable heads containing hollow U-shaped blades, one head is fixedly connected with the pliers tail and contains a guide wire cavity and a control wire cavity which are communicated with the wire cavity of the pliers tail, and the other head is connected with the head through a shaft. The control guide wire penetrates out of the middle section of the fixed cutter head to the inner side through the tail part of the clamp and a control guide wire cavity of the fixed cutter head, and the tail end of the control guide wire is fixed to the inner side face of the middle section of the movable cutter head. The cutter head is opened and closed by controlling the guide wire. When the two forceps knife heads are combined, the front U-shaped blade is used for shearing off and capturing tissues. The forceps can realize the excision of part of the aortic valve leaflet under the intervention of a catheter.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a tool for partially removing aortic valve leaflets.
Background
Transcatheter artificial aortic valve implantation is a rapidly developing cardiac treatment technique in recent years, and provides treatment opportunities for many patients who cannot undergo traditional surgery, so that the patients can continue to live. Whether the patient can carry out the transcatheter artificial aortic valve implantation or not needs to strictly evaluate the coronary artery risk of the patient, and in actual clinical work, 10% -20% of target people can not carry out the transcatheter artificial aortic valve implantation because the overhigh autologous aortic valve leaflet blocks the coronary artery opening after the operation, thereby losing the final treatment opportunity.
How to solve the coronary artery risk of the autologous aortic valve leaflet becomes the difficulty of the current transcatheter artificial aortic valve implantation. At present, no mature technology and apparatus which can directly solve the risk of the autologous aortic valve in the implantation of the transcatheter artificial aortic valve exist.
The invention aims to provide a tool for cutting off part of an aortic valve leaflet in transcatheter intervention, which is used for cutting off the part of the aortic valve leaflet which possibly obstructs the opening of a coronary artery, thereby providing an operation opportunity for a patient who cannot perform transcatheter artificial aortic valve implantation.
Disclosure of Invention
The invention provides a forceps for transcatheter intervention, which can cut off a part of aortic valve leaflets.
The pliers comprise two parts, namely a pliers tail part and a pliers head, wherein the pliers are internally provided with a control guide wire. The tail part of the forceps is of a round long catheter structure, and the forceps is internally provided with two guide wire cavities which penetrate through the whole length and are respectively used for guiding and controlling a guide wire. The forceps tool bit consists of two tool bits which can be folded and cut, one tool bit is fixedly connected with the forceps tail and internally provided with a guide wire guide cavity and a control wire guide cavity, and the distal end of the tool bit is provided with a U-shaped three-side blade; the other cutter head is movably connected with the fixed cutter head through a shaft, the distal end of the cutter head is provided with a U-shaped three-side blade which corresponds to the blade of the cutter head fixedly connected with the cutter head, the tissue can be cut off when the blades are aligned, and the cut tissue is stored in a cavity formed by the U-shaped blade.
The innovation points of the invention are as follows: the invention provides a tool capable of cutting off part of aortic valve leaflets under the intervention of a catheter, and fills the blank of the technology. The design of the U-shaped blade head of the invention provides a larger cutting width of the blade on the premise of keeping the smaller diameter of the blade head and ensuring better intervention trafficability, and not only cuts off the aortic valve leaflets, but also cuts off a valve tissue with enough width, thereby fully relieving the occlusion of the valve leaflet tissue on the coronary artery opening. The arrangement of the control guide wire of the invention can ensure that enough shearing force is realized under the condition of only using one joint. Meanwhile, due to the single-joint design, only the knife head part is opened and closed, and the damage of the knife body and the tail part to the vessel wall on the valve during operation is avoided.
As apparent from the above description of the present invention, the present invention aims to solve the problem of achieving transcatheter resection of a portion of an aortic valve leaflet. Filling the blank of the technology.
The invention designs a tool for cutting off a part of aortic valve leaflet in transcatheter intervention, which can cut off the overhigh part of the aortic valve leaflet blocking the opening of a coronary artery for a patient who cannot perform transcatheter aortic valve implantation because the aortic valve leaflet is overhigh, so that the patient can obtain the chance of operation.
Drawings
Fig. 1 is a cross-sectional view of the tail portion (1) of the pliers, taken along most of its length, before it transitions from the tail end to the nose end and is connected to the head of the pliers.
Figure 2 is a cross-sectional view of the tail (1) of the pliers near the connection with the head of the pliers where the tail transitions to an oblate shape similar to the head cross-section.
Fig. 3 is a sectional view of the beginning of the tool bit and the shaft seat of the tool bit (2 a) fixedly connected with the tail of the pliers.
Fig. 4 is a sectional view of the position before the shaft, at the location where the shaft seats (3a, 3 b) on both the fixedly and movably connected cutter head are shown.
Fig. 5 is a sectional view at the position of the shaft (3 c).
Fig. 7 is a sectional view of a solid portion in the middle of the two tool bits (2a, 2 b).
Fig. 8 is a sectional view of the middle section of the forceps head (2) near the blade, and the control guide wire (4) passes through the inner side wall of the fixed head (2 a) to the movable head (2 b).
Figure 9 is a cross-sectional view of the blade portion of the jawset head.
Fig. 10 is a cross-sectional view of the tip (2a-4) of a tool bit fixedly attached to the tail of a pliers.
Fig. 11 is a side view of the bit (2) and partially attached tail (1).
FIG. 12 is a cross-sectional view along the long axis of the forceps, through the two guidewire lumens and through the center line of the two cutting tips.
Figure 13 is a schematic view of the cross-section shown in figures 1-10 in a position on the forceps.
Fig. 14 is a schematic view of the aortic root (5) near the aortic valve.
Fig. 15 is a schematic view of the forceps head (2) being delivered to the target aortic valve position.
FIG. 16 is a schematic view of the entire forceps being delivered to a target site via a peripheral vessel.
In the figure, each reference number indicates 1, a clamp tail part; 1a, a guide wire cavity of the forceps tail; 1b, a control wire guide cavity of the pincer tail; 2. a tong cutter head; 2a, a cutter head fixedly connected; 2a-1, a guide wire cavity fixedly connected in the wall of the cutter head; 2a-2, a control guide wire cavity in the wall of the cutter head fixedly connected with the cutter head; 2a-3, a blade of a cutter head fixedly connected; 2a-4, the tip of the cutter head is fixedly connected; 2b, a movable tool bit; 2b-1, limiting edgings of the movable tool bit; 2b-2 blade of movable cutting head; 3. a connecting shaft of the movable tool bit; 3a, a shaft seat positioned at the near section of the fixed tool bit; 3a-1, a hole for passing through the shaft lever is arranged on the shaft seat for fixing the cutter head; 3b, a shaft seat positioned at the near section of the movable cutter head; 3b-1, a hole for passing through the shaft lever is arranged on the movable tool bit shaft seat; 3c, a shaft lever; 4. controlling the guide wire; 5. aortic root schematic; 5a, aortic valve leaflets; 5b, coronary artery; 5c, aortic sinus; 6. a guide wire for guiding the forceps to the working site (prior art).
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings
Fig. 1 to 16 show a tool for transeptal intervention for excising a portion of an aortic valve leaflet of the present invention, and an example of use thereof.
Fig. 15 is a schematic view of the forceps head (2) being delivered to the target aortic valve position. The utility model provides a pliers of aortic valve leaflet is removed in part, including pincers afterbody (1), pincers tool bit (2) and control seal wire (4), the pincers afterbody is circular long catheter structure, contain two silk guide chamber that link up the full-length, the pincers tool bit contains two tool bits that contain the U-shaped blade that can close, a tool bit (2 a) links to each other with pincers afterbody is fixed, contain with afterbody guide silk guide chamber and the communicating chamber in control silk guide chamber, another tool bit (2 b) is mobilizable tool bit, link to each other with fixed tool bit (2 a) through axle (3), control silk guide chamber is used for through control seal wire (4) to offside activity tool bit, the opening and shutting of control tool bit. The clamp tail part (1) is mainly of a circular catheter structure in full length, the clamp tail part is in a flat tube shape similar to the cross section of a tool bit in transition before being connected with the tool bit at the head end, two cavities (1a and 1 b) penetrating through the full length are arranged in the clamp tail part and are used for guiding and controlling the guiding wire respectively, the main body of the clamp tail part is made of a common catheter material on the market, the diameter of the clamp tail part is 3-8 mm, the inner diameter of the guiding wire cavity is about 1mm, the common guiding wire with the diameter of 0.89mm can be passed through the guide wire on the market, and the length of the clamp tail part is 1. The utility model discloses a pincers head sword (2), including two tool bits that can close, every tool bit front end all contains the U-shaped blade, and a tool bit (2 a) links to each other with pincers afterbody is fixed, and the tool bit full length link up one with pincers afterbody guide seal wire chamber (1a) communicating chamber (2a-1), and the nearly midrange section of tool bit contains another and pincers afterbody control seal wire chamber communicating chamber (2 a-2), and another tool bit (2 b) are mobilizable tool bit, link to each other with fixed tool bit (2 a) through axle (3). The wire guiding device is characterized in that a cutter head (2 a) is fixed, the near end of the cutter head is fixedly connected with a forceps tail part (1), a guiding wire guiding cavity (2a-1) penetrating through the whole length of the cutter head is arranged in the outer side wall of the cutter head and is continuously communicated with the guiding wire guiding cavity (1a) at the forceps tail part, a control wire guiding cavity (2 a-2) is arranged on the inner side of the guiding wire guiding cavity near the middle section of the cutter head, and the cavity is perforated towards the inner side of the cutter. The cutting tool comprises a fixed cutting head (2 a), a shaft seat (3a) of a shaft (3) is arranged at the starting part of the near section of the cutting tool, the middle section of the cutting tool is a solid body, a three-sided blade (2a-3) is arranged at the far section of the cutting tool, the three-sided blade and the middle section of the cutting tool enclose a hollow cutter body, the tip (2a-4) of the cutting tool is designed in a conical shape, the length of the cutting tool (excluding the tip) is 3-6 cm, the length of the part of the blade is 1-2.5 cm, the length of the part of the tip (2a-4) at the far. The near end of a movable tool bit (2 b) is connected with a fixed tool bit through a shaft (3), the starting part of the near section of the tool bit is provided with a shaft seat (3 b) embedded with the shaft seat (3a) of the fixed tool bit, the middle section is a solid body, and two sides of the middle section are provided with limiting edgings (2 b-1) which are involuted with the middle section of the fixed tool bit; the long section of the cutter head is provided with a three-side blade (2b-2), the three-side blade and the middle section of the cutter head enclose a hollow cutter body, the three-side blade is opened and closed correspondingly to a blade (2a-3) of the fixed cutter head (2 a), tissues can be cut off and enclosed in the hollow cutter body, the length of the movable cutter head is 3-6 cm, the length of the part of the blade is 1-2.5 cm, the maximum diameter of the two cutter heads after being closed is 4-8 mm, the outer side of the cutter head is arc-shaped, the three-side blade and the middle section of the cutter head can be fed into a target position through a common conveying sheath pipe in the market after being combined with the. The cutter head is made of materials similar to common metal scissors. The movable cutter head connecting shaft (3) consists of shaft seats (3a, 3 b) which are respectively positioned at the near sections of the fixed cutter head and the movable cutter head and are embedded with each other, the corresponding positions of the shaft seat body parts are respectively punched (3 a-1 and 3 b-1), and the shaft rod (3 c) penetrates through the holes, so that the cutter head can be opened and closed by taking the shaft rod as the center. The control guide wire (4) penetrates through the control guide wire cavity from the tail part of the clamp, penetrates out to the opposite movable cutter head from the middle section of the cutter head through the control guide wire cavity of the cutter head fixedly connected, the tail end of the control guide wire is fixed on the inner side surface of the middle section of the movable cutter head, the control guide wire is made of common metal guide wire materials on the market, the diameter of the control guide wire can be set to be the same as that of a common guide wire, and if the diameter of the control guide wire is 0.89mm, the length of the control guide wire cavity is enough to be led out to the tail. Its fixed tool bit (2 a), according to the use needs, can increase the guide head of tapered at the end, be more convenient for through sheath pipe propelling movement to the target location. The connecting shaft can be added with the metal spring assistance similar to the shaft of a common elastic clamp on the shaft part so as to strengthen the opening force of the movable cutter head.
The tool comprises a forceps tail and a forceps head part, wherein a control guide wire is contained in the forceps tail and the forceps head part. When the tool is used, a commercially available common guide wire is firstly used for establishing a passage through a femoral artery, the head end of the guide wire is placed into an aortic valve orifice, the guide wire passes through a guide wire cavity of the tool, and the whole device is guided to be sent to the position above the aortic valve orifice along the guide wire. After the tool head end is positioned above the aortic valve, the control guide wire is pushed, the movable tool head is opened, the movable tool head is rotated to the valve sinus direction of the target aortic valve leaflet, the clamp tool head is downwards sent, and the tail end of the movable tool head is sent into the target aortic valve sinus, so that the two tool heads are respectively arranged at two sides of the target aortic valve leaflet. After the accurate positioning is confirmed through esophagus ultrasonic and X-ray images, the control guide wire is pulled back, the two tool bits are occluded, the aortic valve leaflet at the target position is cut off, the cut valve leaflet is stored in the hollow tool body, and the forceps are withdrawn integrally to complete the cutting off and the taking out of part of the aortic valve leaflet.
The forceps are guided by the guide wire (6) to be sent to the aortic valve orifice, the forceps head is opened under the action of the control guide wire (4), the movable blade (2 b) is sent into the aortic sinus, and the blade part (2b-2) of the movable blade and the blade part (2a-3) of the blade head fixedly connected are located on two sides of the target aortic valve (5 a).
Fig. 1 to 10 are schematic cross-sectional views of the forceps head from the tail of the forceps in sequence, and fig. 13 is a schematic cross-sectional view of the specific position of the cross-section on the forceps.
Fig. 1 is a cross-sectional view of the tail portion (1) of the pliers, taken along most of its length, before it transitions from the tail end to the nose end and is connected to the head of the pliers. The cross section is circular and solid, and the cross section of a guide wire cavity (1a) and a control guide wire cavity (1 b) are contained, wherein the control guide wire cavity (1 b) is provided with a cross section of a control guide wire (4).
Figure 2 is a cross-sectional view of the tail (1) of the pliers near the connection with the head of the pliers where the tail transitions to an oblate shape similar to the head cross-section. The cross section is mostly solid and contains the cross section of the guide wire cavity (1a) and the control guide wire cavity (1 b), wherein the control guide wire cavity (1 b) is provided with a cross section of the control guide wire (4).
Fig. 3 is a sectional view of the beginning of the tool bit and the shaft seat of the tool bit (2 a) fixedly connected with the tail of the pliers. Two shaft seats (3a) are visible, which are located on the fixed cutter head (2 a), and the lower part of the shaft seats contains the section of a cavity (2a-1) for guiding a guide wire and a cavity (2 a-2) for guiding a control guide wire, and the control guide wire cavity is internally provided with a control guide wire (4).
Fig. 4 is a sectional view of the position before the shaft, at the location where the shaft seats (3a, 3 b) on both the fixedly and movably connected cutter head are shown. Showing two shaft seats (3a) on the fixedly connected cutter head, a shaft seat (3 b) on the movably connected cutter head, a cavity (2a-1) which is arranged at the lower part of the fixedly connected cutter head and passes through the guide wire and a cavity (2 a-2) which passes through the control guide wire, and a control guide wire (4) is arranged in the cavity of the control guide wire.
Fig. 5 is a sectional view at the position of the shaft (3 c). It can be seen that the two shaft seats (3a) on the fixedly connected cutter head, the shaft seat (3 b) on the movably connected cutter head, and the shaft lever (3 c) passing through the two cutter head shaft seats. The lower part of the fixedly connected cutter head is provided with a cavity (2a-1) which passes through the guide wire and a cavity (2 a-2) which passes through the control guide wire, and the control guide wire cavity is internally provided with a control guide wire (4).
Fig. 6 is a cross-sectional view of the region behind the axle seat and in front of the mid-sections of the two bits. The shape behind the shaft seat of the movable cutter head (2 b) and the shape behind the shaft seat of the fixedly connected cutter head (2 a) can be seen. The lower part of the fixedly connected cutter head is provided with a cavity (2a-1) which passes through the guide wire and a cavity (2 a-2) which passes through the control guide wire, and the control guide wire cavity is internally provided with a control guide wire (4).
Fig. 7 is a sectional view of a solid portion in the middle of the two tool bits (2a, 2 b). The two sides of the movable tool bit are provided with limit edgings (2 b-1). The cutter head body part fixedly connected is provided with a cavity (2a-1) for guiding the guide wire and a cavity (2 a-2) for controlling the guide wire, and the control guide wire cavity is internally provided with a control guide wire (4).
Fig. 8 is a sectional view of the middle section of the forceps head (2) near the blade, and the control guide wire (4) passes through the inner side wall of the fixed head (2 a) to the movable head (2 b). The two sides of the movable tool bit are provided with limit edgings (2 b-1). The cutter head body part fixedly connected is provided with a cavity (2a-1) which is used for guiding the guide wire, the inner side of the cavity (2 a-2) is provided with a hole for perforating the inner side wall of the fixed cutter head, the control guide wire cavity is internally provided with a control guide wire (4), and the tail end of the control guide wire is fixed to the movable cutter head (2 b).
Figure 9 is a cross-sectional view of the blade portion of the jawset head. The upper part is a movable cutter head (2 b), two sides of the clamp body of the cutter head part of the movable cutter head are blades (2b-2), and the middle part is a hollow structure. The lower part is a cutter head (2 a) which is fixedly connected, a cavity (2a-1) for guiding a guide wire is arranged in the outer side wall of the cutter head, the two sides of the cutter head are blades (2a-3), and the middle of the cutter head is of a hollow structure.
Fig. 10 is a cross-sectional view of the tip (2a-4) of a tool bit fixedly attached to the tail of a pliers. The guide wire cavity (2a-1) can be seen in each section from the proximal tip. The tip is in a cone shape gradually shrinking towards the tail end.
Fig. 11 is a side view of the bit (2) and partially attached tail (1). Wherein the movable cutting head (2 b) is shown separately. The forceps tail (1) is continuously connected with the fixedly connected cutter head (2 a), and a guide wire cavity (1a) of the forceps tail is continuously communicated with a guide wire cavity (2a-1) in the outer side wall of the fixedly connected cutter head. The control guide wire cavity (1 b) of the forceps tail is continuously communicated with the control guide wire cavity (2 a-2) in the outer side wall of the cutter head which is fixedly connected. The control guide wire cavity is internally provided with a control guide wire (4). The guide wire cavity and the control guide wire are located inside the forceps body, and the position of the inner projection of the guide wire cavity and the control guide wire in a lateral view of the forceps is indicated by a dotted line. The near end of the fixedly connected cutter head is provided with a shaft seat (3a) which is mutually wedged with a shaft seat (3 b) at the near end of the movable cutter head, corresponding parts of the shaft seats of the two cutter heads are respectively provided with a hole (3 a-1 and a hole (3 b-1), and the holes penetrate through a shaft lever (3 c) to be connected with the two cutter heads. The two sides of the middle section of the movable tool bit are provided with limit edgings (2 b-1). The distal ends of the two cutter heads are respectively provided with three side blades (2b-2, 2a-3) distributed in a U shape. The tip (2a-4) of the fixed cutter head is tapered towards the far end.
FIG. 12 is a cross-sectional view along the long axis of the forceps, through the two guidewire lumens and through the center line of the two cutting tips. The section of the clamp tail (1) and the two clamp heads (2a, 2 b) are displayed. The forceps tail (1) is internally provided with a guide wire cavity (1a) and a control wire cavity (1 b), which are respectively communicated with the guide wire cavity (2a-1) and the control wire cavity (2 a-2) in the cutter head (2 a) which is fixedly connected, and the control wire cavity is internally provided with a control guide wire (4). The near end of the movable tool bit (2 b) is seen in the shaft seat (3 b), the shaft seat body is seen in the hole (3 b-1), and the shaft rod (3 c) is penetrated in the hole. The distal ends of the two cutting heads are seen as the distal portions (2a-3, 2b-2) of the U-shaped blades. The tip (2a-4) of the fixed cutter head is conical.
Figure 13 is a schematic view of the cross-section shown in figures 1-10 in a position on the forceps. The positions are correspondingly expressed as (r) - (r).
Fig. 14 is a schematic view of the aortic root (5) near the aortic valve. The figure shows two aortic valve leaflets (5 a), coronary arteries (5 b), aortic valve sinuses (5 c).
FIG. 16 is a schematic view of the entire forceps being delivered to a target site via a peripheral vessel. The forceps head (2) is sent to the aortic root (5) from the forceps tail (1) along the guide wire (6) through the peripheral artery access.
The invention aims to provide a tool for cutting off part of aortic valve leaflets for transcatheter intervention, which is used for cutting off part of the overhigh aortic valve leaflets for patients who need transcatheter artificial aortic valve implantation for life treatment but cannot be operated because of the higher aortic valve leaflets, thereby obtaining operation opportunities and continuing lives.
The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a pincers of aortic valve leaflet is partly removed, including pincers afterbody (1), pincers tool bit (2) and control seal wire (4), the pincers afterbody is circular long pipe structure, include two wire guide chambers that link up the full-length, the pincers tool bit contains two tool bits that contain the U-shaped blade that can close, a tool bit (2 a) is fixed continuous with the pincers afterbody, include with afterbody guide wire guide chamber and the communicating chamber in control wire guide chamber, another tool bit (2 b) is mobilizable tool bit, link to each other with fixed tool bit (2 a) through axle (3), control wire guide chamber is used for through control seal wire (4) to offside activity tool bit, the opening and shutting of control tool bit.
2. The forceps for partially removing aortic valve leaflets according to claim 1, wherein the forceps tail portion (1) has a circular catheter structure in most of the total length, the transition is in a flat tube shape with a section similar to that of the forceps head before the connection with the forceps head is made to the head end, two cavities (1a, 1 b) penetrating the total length are formed in the forceps tail portion and are used for guiding and controlling the guide wire respectively, the main body of the forceps tail portion is made of a common catheter material on the market, the diameter of the forceps tail portion is 3-8 mm, the inner diameter of the guide wire cavity is about 1mm, the guide wire can pass through a common guide wire with a diameter of 0.89mm on the market, and the length of the forceps tail portion is 1-1..
3. The forceps for partially removing aortic valve leaflets according to claim 1, wherein the forceps head knife (2) comprises two foldable knife heads, each knife head comprises a U-shaped blade at the front end, one knife head (2 a) is fixedly connected with the tail of the forceps, the full length of the knife head penetrates through a cavity (2a-1) communicated with the guide wire cavity (1a) at the tail of the forceps, the middle section near the knife head comprises another cavity (2 a-2) communicated with the control wire cavity at the tail of the forceps, and the other knife head (2 b) is movable and is connected with the fixed knife head (2 a) through a shaft (3).
4. The forceps for partially removing aortic valve leaflets as claimed in claim 3, wherein the cutting head (2 a) is fixed, the proximal end is fixedly connected to the forceps tail (1), the outer side wall of the cutting head is provided with a guide wire chamber (2a-1) extending through the entire length of the cutting head, the guide wire chamber (1a) is continuously communicated with the forceps tail, the inner side of the guide wire chamber at the middle section of the cutting head contains a control wire chamber (2 a-2), and the control wire chamber is perforated towards the inner side of the cutting head before the starting part of the cutting blade at the middle section of the cutting head.
5. The forceps for partially removing aortic valve leaflets as claimed in claim 3, wherein a cutting head (2 a) is fixed, the proximal section of the cutting head has a shaft seat (3a) of a shaft (3), the middle section is solid, the distal section has three blades (2a-3), the three blades and the middle section of the cutting head enclose a hollow cutter body, the tip (2a-4) of the cutting head is designed in a cone shape, the length of the cutting head (excluding the tip) is 3-6 cm, the length of the blade part is 1-2.5 cm, the length of the distal tip (2a-4) part of the cutting head is 4-20 mm, and the cutting head is made of a material similar to that of common metal scissors.
6. The forceps for partially removing aortic valve leaflets as claimed in claim 3, wherein the proximal end of the movable cutting head (2 b) is connected to the fixed cutting head through a shaft (3), the starting portion of the proximal section of the cutting head has a shaft seat (3 b) embedded with the shaft seat (3a) of the fixed cutting head, the middle section is solid, and the two sides of the middle section are provided with limiting side strips (2 b-1) which are involuted with the middle section of the fixed cutting head; the long section of the cutter head is provided with a three-side blade (2b-2), the three-side blade and the middle section of the cutter head enclose a hollow cutter body, the three-side blade is opened and closed correspondingly to a blade (2a-3) of a fixed cutter head (2 a), tissues can be cut off and enclosed in the hollow cutter body, the length of the movable cutter head is 3-6 cm, the length of a blade part is 1-2.5 cm, the maximum diameter of two cutter heads after being closed is 4-8 mm, the outer side of the cutter head is arc-shaped, the two cutter heads can be fed into a target position through a common conveying sheath pipe in the market after being combined with a clamp tail, the vertex angle of the far end of the cutter head is arc-shaped, and the cutter.
7. The forceps for partially removing aortic valve leaflets as claimed in claim 3, wherein the movable blade connecting shaft (3) comprises shaft seats (3a, 3 b) respectively disposed at the proximal sections of the fixed blade and the movable blade and embedded with each other, the shaft seats are perforated at corresponding positions (3 a-1, 3 b-1) respectively, and a shaft rod (3 c) is inserted into the holes to allow the blades to open and close around the shaft rod.
8. The forceps for partially cutting aortic valve leaflets according to claim 1, wherein the control guide wire (4) is inserted from the tail of the forceps through the control guide wire cavity, passes through the control guide wire cavity of the fixedly connected cutter head, and penetrates out from the middle section of the cutter head to the opposite movable cutter head, the tail end of the control guide wire is fixed on the inner side surface of the middle section of the movable cutter head, the control guide wire is made of a common metal guide wire material on the market, the diameter of the control guide wire can be set to be the same as that of the common guide wire, such as 0.89mm, and the length of the control guide wire is enough to be led out from the control guide wire cavity of the.
9. The forceps for partially removing aortic valve leaflets as claimed in claim 3, wherein the fixed cutting head (2 a) can be added with a tapered guiding head at the end to facilitate pushing to the target position through the sheath tube according to the use requirement.
10. The aortic valve leaflet partially resected forceps as claimed in claim 3, wherein the connecting shaft is provided with a metal spring similar to a common elastic clip on the shaft for assisting the opening of the movable blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151502.6A CN112155660A (en) | 2020-10-25 | 2020-10-25 | Forceps for partially removing aortic valve leaflets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011151502.6A CN112155660A (en) | 2020-10-25 | 2020-10-25 | Forceps for partially removing aortic valve leaflets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112155660A true CN112155660A (en) | 2021-01-01 |
Family
ID=73866176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011151502.6A Pending CN112155660A (en) | 2020-10-25 | 2020-10-25 | Forceps for partially removing aortic valve leaflets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112155660A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522206A (en) * | 1983-01-26 | 1985-06-11 | Dyonics, Inc. | Surgical instrument |
| US5026383A (en) * | 1989-06-14 | 1991-06-25 | Nobles Anthony A | Apparatus for in-situ cutting of valves within veins and method therefor |
| US5052402A (en) * | 1989-01-31 | 1991-10-01 | C.R. Bard, Inc. | Disposable biopsy forceps |
| WO1995008292A1 (en) * | 1993-09-20 | 1995-03-30 | Boston Scientific Corporation | Multi-motion multiple biopsy sampling device |
| US5626578A (en) * | 1995-05-08 | 1997-05-06 | Tihon; Claude | RF valvulotome |
| US5906630A (en) * | 1998-06-30 | 1999-05-25 | Boston Scientific Limited | Eccentric surgical forceps |
| US20010044591A1 (en) * | 1991-07-16 | 2001-11-22 | Heartport, Inc. | System for cardiac procedures |
| US20020029006A1 (en) * | 1996-11-25 | 2002-03-07 | Scimed Life Systems, Inc. | Biopsy instrument having irrigation and aspiration capabilities |
| CN107405168A (en) * | 2015-03-23 | 2017-11-28 | 捷锐士阿希迈公司(以奥林巴斯美国外科技术名义) | Medical clamp with blood vessel cut-out ability |
| US20180206877A1 (en) * | 2015-07-23 | 2018-07-26 | Erchinger Medtechnology Gmbh & Co. Kg | Device for severing and removing tissue parts |
| US20200146691A1 (en) * | 2018-11-14 | 2020-05-14 | Medtronic, Inc. | Devices and methods for preparing a valve for a transcatheter valve replacement procedure |
-
2020
- 2020-10-25 CN CN202011151502.6A patent/CN112155660A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522206A (en) * | 1983-01-26 | 1985-06-11 | Dyonics, Inc. | Surgical instrument |
| US5052402A (en) * | 1989-01-31 | 1991-10-01 | C.R. Bard, Inc. | Disposable biopsy forceps |
| US5026383A (en) * | 1989-06-14 | 1991-06-25 | Nobles Anthony A | Apparatus for in-situ cutting of valves within veins and method therefor |
| US20010044591A1 (en) * | 1991-07-16 | 2001-11-22 | Heartport, Inc. | System for cardiac procedures |
| WO1995008292A1 (en) * | 1993-09-20 | 1995-03-30 | Boston Scientific Corporation | Multi-motion multiple biopsy sampling device |
| US5626578A (en) * | 1995-05-08 | 1997-05-06 | Tihon; Claude | RF valvulotome |
| US20020029006A1 (en) * | 1996-11-25 | 2002-03-07 | Scimed Life Systems, Inc. | Biopsy instrument having irrigation and aspiration capabilities |
| US5906630A (en) * | 1998-06-30 | 1999-05-25 | Boston Scientific Limited | Eccentric surgical forceps |
| CN107405168A (en) * | 2015-03-23 | 2017-11-28 | 捷锐士阿希迈公司(以奥林巴斯美国外科技术名义) | Medical clamp with blood vessel cut-out ability |
| US20180206877A1 (en) * | 2015-07-23 | 2018-07-26 | Erchinger Medtechnology Gmbh & Co. Kg | Device for severing and removing tissue parts |
| US20200146691A1 (en) * | 2018-11-14 | 2020-05-14 | Medtronic, Inc. | Devices and methods for preparing a valve for a transcatheter valve replacement procedure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11602367B2 (en) | Apparatuses and methods for cutting a tissue bridge and/or removing a heart valve clip or suture | |
| US6685716B1 (en) | Over-the-wire apparatus and method for open surgery making of fluid connection between two neighboring vessels | |
| US8771302B2 (en) | Method and apparatus for resecting and replacing an aortic valve | |
| JP4504349B2 (en) | Cutting device and stenosis incision device | |
| US8070801B2 (en) | Method and apparatus for resecting and replacing an aortic valve | |
| US8623077B2 (en) | Apparatus for replacing a cardiac valve | |
| CA2854116C (en) | Apparatuses and methods for cutting a tissue bridge and/or removing a heart valve clip or suture | |
| US7201761B2 (en) | Method and apparatus for resecting and replacing an aortic valve | |
| KR101333472B1 (en) | A surgical drill, a set of surgical drills, a system for cutting bone and a method for removing bone | |
| US5282813A (en) | Surgical apparatus for removal of deposits from vessels | |
| AU761693B2 (en) | A surgical forceps | |
| US20110201991A1 (en) | Valve bypass graft device, tools, and method | |
| EP3687427A1 (en) | Apparatuses and methods for cutting a tissue bridge and/or removing a heart valve clip or suture | |
| EP3384857A1 (en) | Surgical cutting instrument with distal suction capability | |
| US20040243157A1 (en) | Surgical devices incorporating liquid jet assisted tissue manipulation and methods for their use | |
| US20140012257A1 (en) | System and method for resecting a valve | |
| WO2009061611A1 (en) | Suture cutter and method of cutting suture | |
| US9387039B2 (en) | Aortic dissection septal cutting tool | |
| WO2011062865A2 (en) | Aortic dissection septal cutting tool | |
| JP4577696B2 (en) | Apparatus and method for lacrimal nasal cavity anastomosis | |
| EP2760351B1 (en) | Apparatuses for cutting a tissue bridge and/or removing a heart valve clip or suture | |
| US20140228843A1 (en) | System and method for resecting a valve | |
| ES2925073T3 (en) | Devices for cutting lens tissue | |
| CN112155660A (en) | Forceps for partially removing aortic valve leaflets | |
| CN107582125A (en) | A kind of operation cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |