PATENT ACT 1970
(39 OF 1970)
COMPLETE SPECIFICATION
(FORM-2)
TITLE - STEEL SURGICAL SKIN STAPLER WITH REPLACEBLE STAPLE CARTRIDGE.
NAME OF APPLICANT- SISCON PHARMACEUTICAL MANUFACTURING PVT. LTD.
ADDRESS OF APPLICANT- CITY PLAZA, OPP. KALIKA MANDIR, OLD AGRA ROAD, NASHIK - 422002, MAHARASHTRA.
INVENTOR NAME - 1) DR. SANJAY H. DHURJAD 2) NITIN G. MANKAR
PREAMBLE OF INVENTION- This invention in particular describes the nature of the invention and the manner in which it is to be performed.
FIELD OF INVENTION - The invention relates to a surgical instrument for applying sterilized staples from a reloadable staple-carrying cartridge to the disunited skin of a patient in order to effect a joining of the skin. The instrument is auto clavable with changeable pin cartridge and hence best suitable as reusable skin stapler making it even more economical.
PRIOR ART-
In the existing system as given in United States Patent - 3643851, wherein, the said invention relates to a surgical instrument for applying sterilized staples from a disposable staple-carrying cartridge to the disunited skin of a patient in order to effect a joining of the skin. The instrument consists of an anvil adapted to lie flush with the skin, a disposable cartridge housing a plurality of staples which are to be folded around the anvil, and a pusher for bending the staples around the anvil The pusher is U-shaped with chamfers on the arms thereof to effect the bending with a minimum of force. A gas-powered unit serves to eject and form the staples in a neat and uniform manner. A novel disposable gas cartridge is also disclosed.
In the existing system as given in United States Patent - 4664305, wherein the said invention relates to a skin stapler having a plurality of staples comprising a frame structure, with a nose section for directing the staple at a wound site, including a housing therein having an anvil, a staple ejector, a driver for deforming the staple about the anvil, and a staple follower for continually urging the staples against a release member. Means are also provided for actuating the driver in a substantially translatable direction; and the actuating means comprises a toggle mechanism. In addition, the stapler is provided with means for restoring the driver to its unactivated position, and means are provided for preventing the
double loading of the staples in said surgical stapler. The skin stapler is lightweight and of the disposable type as it is generally small and relatively compact
In the existing system as given United States Patent - 5161725, wherein, the invention relates to a surgical stapler having a trigger attached to a ratcheting mechanism for preventing the refiring of the stapler trigger with a staple loaded within a forming mechanism. In addition, the mechanism contains driver buffering means to prevent the sharp reduction in opposing force driving formation of a staple. The staples are constantly maintained in proper orientation during transfer from a track to the forming site, and are self-centering on the former, and have an oversized crown so that cold-worked areas on each staple do not hinder forming.
In the existing system as given in United States Patent - 4523707, wherein, said invention relates to a skin stapler having a plurality of staples comprising a frame structure, with a nose section for directing the staple at a wound site, including a housing therein having an anvil, a staple ejector, a driver for deforming the staple about the anvil, and a staple follower for continually urging the staples against a release member. Means are also provided for actuating the driver in a substantially translatable direction; and the actuating means comprises a toggle mechanism. In addition, the stapler is provided with means for restoring the driver to its unactivated position, and means are provided for preventing the double loading of the staples in said surgical stapler. The skin stapler is lightweight and of the disposable type as it is generally small and relatively compact.
In the existing system as given in United States Patent - 6318616, wherein, said invention relates to surgical stapler including a longitudinal body having a handle portion and a trigger portion pivotally mounted to the handle portion. The surgical stapler including a cartridge assembly having a plurality of formable staples therein. The staples being formable through actuation of the trigger portion of the longitudinal body. The cartridge assembly includes an upper chassis assembly having a centrally disposed channel. The channel accommodating a reciprocating pusher follower and a reciprocating pusher plate. The pusher plate being coupled to the pusher follower and reciprocally advancable against an anvil plate. The pusher plate forming at least one of a plurality of staples around an anvil tip of the anvil plate. The cartridge assembly also including a lower track portion coupled to the upper chassis assembly. The lower track portion including a plurality of channels and ridges for receiving end points of the plurality of staples, wherein at least one of the plurality of staples is advancable between the pusher plate and the anvil plate for forming the at least one of the plurality of staples around the anvil plate.
In the existing system as given in United States Patent 6652538, wherein, said invention relates to apparatus and methods for applying fasteners during endoscopic surgery. The apparatus generally comprises a handle portion, a triggering mechanism and a fastener applicator. One embodiment of the invention forms the fastener around a single focal point on an anvil. Another embodiment vertically stacks the fasteners in a fastener applicator which is readily detachable from the handle portion by virtue of a rotational locking system and which may be replaced with a new fastener applicator having a fresh load of vertically stacked fasteners. The various embodiments may be variously combined together in a single device. The methods generally include the following steps: forming a fastener by placing it over a single focal point anvil and pressing the fastener against the single focal point anvil using a slide
In the existing system as given in United States Patent 7438209, wherein, said invention relates to an anvil of a surgical stapler including releasable pocket elements that can capture ends of fired staples. In various embodiments, the pocket elements can be released from the anvil such that the pocket elements remain with the staples and stapled tissue alter the stapler has been fired. When deployed, the ends of the staples may be turned, or bent, by the pocket elements and then contact a staple-end retaining surface of the pocket element that prevents the ends of the staples from re-puncturing or re-penetrating the tissue. In various embodiments, forces created during the stapling and/or cutting actions of the stapler can overcome a pressure-fit force retaining the pocket elements in the anvil such that the pocket elements are released upon firing. In various embodiments, the staples can have a dissolvable or bioabsorbable crown which can release pressure on the stapled tissue as it is dissolved or absorbed
In the existing system as given in United States Patent - 7048171, wherein, said invention relates to a surgical stapler which has an actuating trigger that is operable in three distinct positions. The actuating trigger works in combination with a forming tool and a window opening in a disposable staple cartridge to lock and align the centerline of a staple ready to be formed guaranteeing a smooth and precise insertion into a wound or incision.
In the existing system as given in United States Patent - 5862972, wherein, said invention disclose an endoscopic surgical stapling apparatus. The apparatus comprises a frame and a generally elongated endoscopic section connected to the frame and extending distally there from. The endoscopic section includes a mechanism for storing a plurality of staples, a mechanism for advancing the staples for positioning adjacent body tissue and a mechanism for at least partially closing each staple. A low pressure pneumatic system disposed in the frame provides the forces to at least partially activate the staple advancing mechanism. The apparatus has particular application in attaching mesh to body tissue as in laparoscopic hernia repair
In the existing system as given in Indian Patent No. 1000/KOL/2006, wherein, methods and devices are provided for effecting movement of one or more components of multifire device, such as a clip applier, hernia tacker,or skin stapler. In one exemplary embodiment, a surgical fastening instrument is provided having an elongate shaft with an end effector coupled thereto and adapted to apply one or more surgical fasteners to tissue. An electrically expandable and contractible actuator, such as an electro active polymer actuator, can be used to drive a fastener advancing of forming assembly through the elongate shaft, thereby driving a surgical fastener into tissue. In another embodiment, an electrically expandable and contractible actuator, such as an electro active polymer actuator, can be used to effect movement of an articulation joint formed between the elongate shaft and the end effector.
In the existing system as given in Indian Patent No. 999/KOL/2006, wherein, methods and devices are provided for effecting movement of one or more components of a multifire device, such as a clip applier, hernia tacker, or skin stapler. In one exemplary embodiment, a surgical fastening instrument is provided having an elongate shaft with an end effector coupled thereto and adapted to apply one or more surgical fasteners to tissue. An electrically expandable and contractible actuator, such as an electroactive polymer actuator, can be used to drive a fastener advancing or forming assembly through the elongate shaft, thereby driving a surgical fastener into tissue. In another embodiment, an electrically expandable and contractible actuator, such as an electroactive polymer actuator, can be used to effect movement of an articulation joint formed between the elongate shaft and the end effector.
OBJECT OF THE INVENTION - Traditionally, normal skin staplers are meant for single use only. The instruments are non metallic and hence cannot be sterilized by autoclaving, thus making it impracticable for reuse. The present inventions relates to a stainless steel make skin stapler instrument with unique feature of reloading staple pin cartridge. The instrument is auto clavable with changeable pin cartridge. Hence, it is best used as reusable skin staper making it even more economical and cost effective..
STATEMENT OF INVENTION- The inventor has invented an innovative stainless steel make skin stapler instrument with unique feature of reloading staple pin cartridge. The instrument is auto clavable with changeable pin cartridge and therefore can be used life time and is cost effective.
DETAILED DESCRIPTION OF INVENTION-
Accordingly, in one aspect, this invention relates to a surgical instrument for applying sterilized staples from a reloadable staple-carrying cartridge to the disunited skin of a patient in order to effect a joining of the skin. The skin stapler instrument is made up of stainless steel. Since its body is metallic, it can be easily sterilized by autoclaving which is readily available at all hospitals, as well as is a reliable method of sterilization. This skin stapler instrument can be used life time. The changeable pin cartridge makes it user friendly and extremely cost effective as compared to disposable skin staplers.
The main advantages of this new innovative stainless steel make skin stapler
1. Durability of instrument is life-long.
2. No maintenance cost for instrument.
3. No recurring expenses.
4. Reloading cartridges are available as pre sterilized pack.
5. It is user friendly and easy to handle with simple press fit system
6. It can be sterilized by E.T.O, Gamma Radiation as well as autoclaving.
7. It is extremely economical and saves approximately 80% of the cost as compared to existing instrument.
CLAIMS
We claim,
1. A surgical instrument for applying sterilized staples from a reloadable staple-carrying cartridge to the disunited skin of a patient in order to effect a joining of the skin is invented.
2. A skin stapler as per claim 1, wherein the skin stapler is made up of stainless steel body.
3. A skin stapler as per claim 1, wherein due to its metallic body, it can be easily sterilized by autoclaving which is readily available at all hospitals,, as well as is a reliable method of sterilization
4. A skin stapler as per claim 1, wherein the changeable pin cartridge makes it user friendly and extremely cost effective as compared to disposable skin staplers.