CN102488540A - High-intensity absorbable stitching nail and nail bin component - Google Patents

Abstract

The invention discloses a high-intensity absorbable stitching nail and a nail bin component thereof. The stitching nail comprises a nail body and a fastener, wherein the nail body comprises a base, more than two nail main bodies fixed on the same base, and mounting holes which are arranged axially on each nail main body and penetrate through the nail body; the fastener is provided with clamping holes the number and positions of which are corresponding to those of the nail main bodies, and is clamped on the top of the nail body through the clamping holes; the nail bin component comprises a nail pushing block, a nail propping base, a nail bin and a stitching nail; the nail pushing block comprises a body and a reinforcing pin, and the reinforcing pin is inserted into the mounting hole of the nail body of the stitching nail; the nail pushing block can be installed in the nail bin in a manner of sliding up and down; and the fastener of the stitching pin is installed on the nail propping base. According to the invention, the nail main bodies are designed to be of hollow structures, and the metal reinforcing pin is fixed on the nail pushing block so as to solve the problem of low intensity of the absorbable stitching nail in use; textures can be stitched smoothly in the using process; and the high-intensity absorbable stitching nail is especially suitable for penetrating through thick textures, and can be flexibly applied to various staplers or stitching devices.

Description

High-strength absorbable staple and its cartridge assembly

technical field

The invention relates to a surgical medical instrument, in particular to a high-strength absorbable staple for a stapler or a stapler and a staple cartridge assembly thereof.

Background technique

In surgical operations, staplers or staplers are often used to suture human tissues. When in use, the staple pushing device pushes the staples out of the inner cavity of the staple cartridge during the forward movement of the staple pushing device, thereby pushing The human tissue that needs to be stitched is stitched together.

The staples currently used are mainly metal staples such as titanium nails and stainless steel needles. After the suturing of human tissue is completed, the staples remain in the body and will not be degraded or absorbed by the body, so that it is easy to produce corresponding pain after surgery. sequelae.

In recent years, a class of absorbable suture staples has been gradually developed. Chinese patent 200410045451.3 provides a degradable medical tissue suture, which divides the degradable suture into a degradable female suture button and a degradable suture male button. When the columnar fastener is used to pass through the human tissue, it is plugged and fastened with the seat with holes to realize the suture of the tissue. This patent describes the basic fastening principle of the suture, but does not involve the specific installation and application structure on the stapler or stapler. At the same time, it is also found in actual use that due to the material and structural limitations of the degradable suture, The suture piece is not strong enough to pass through human tissue smoothly, and the suture piece is also difficult to be installed on the existing staplers or staplers commonly used, so there are still great defects in practical application.

This shows that above-mentioned existing suturing element obviously still has inconvenience and defect in structure and use, and urgently needs to be further improved. How to create a new high-strength absorbable staple and its staple cartridge assembly that has high strength, can successfully complete the tissue suture operation, and can be flexibly applied to various staplers or staplers is a great need in the current industry. target for improvement.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-strength absorbable suture staple, which has high strength and can successfully complete the tissue suture operation, thereby overcoming the shortcomings of the existing suture parts.

In order to solve the above-mentioned technical problems, the present invention provides a high-strength absorbable staple, which includes a nail body made of absorbable material and a fastener, the nail body includes a base and more than two nail bodies fixed on the same base, and An installation hole through the nail body is provided along the axial direction of each nail body; the fastener is provided with clamping holes corresponding to the number and position of the nail body, and is clamped with the top of the nail body through the clamping holes.

As an improvement of the present invention, the nail body is a cylindrical or conical structure, the nail head is conical, and the diameter of the conical bottom surface is slightly larger than the diameter of the nail body and the fastener hole, forming a protrusion.

The staples are U-shaped nails, and two nail bodies are fixed on the same base.

The nail body is provided with upper and lower two locking protrusions, respectively forming locking connections with the upper and lower sides of the fastener.

The present invention also provides a staple cartridge assembly, which includes the above-mentioned high-strength absorbable staples, and can be flexibly applied to various staplers or staplers, thereby overcoming the shortcomings of existing staplers.

In order to solve the above-mentioned technical problems, the present invention provides a staple cartridge assembly, including a nail pusher block, a nail abutment seat, a staple cartridge, and the above-mentioned high-strength absorbable staples, wherein: the nail pusher block includes a body and a reinforcing needle fixed on the body , the reinforcing needle is inserted into the installation hole of the staple body; the pusher block fixed with the staple body can be slid up and down and installed in the staple bin; the fastener of the staple is installed on the nail seat superior.

As a further improvement, a cylindrical protrusion is elastically fixed on the nail anvil, and the position of the protrusion corresponds to the position of the fastening hole of the fastener, and the diameter is equal to or slightly smaller than the inner diameter of the fastening hole of the fastener.

A circular groove is provided on the nail anvil, and the protrusion is fixed in the circular groove by four elastic support beams.

Two rows of pusher blocks and staples are installed in the staple magazine, and the two rows of staples are arranged in a staggered manner.

The staple body base, the fastener and the pusher block have the same or corresponding shapes, and are rectangular or crescent-shaped with chamfered corners.

The reinforcing pin is made of metal, and its length is slightly longer than the length of the mounting hole of the staple body.

After adopting such a design, the present invention designs the nail body as a hollow structure, and fixes the metal reinforcement needle on the push nail block, so as to solve the problem of low strength of the absorbable suture staple, and can suture the tissue smoothly during use, especially It is suitable for penetrating thick tissues, and the staple cartridge assembly specially designed according to absorbable staples facilitates its installation and fixation before use and withdrawal after suturing is completed, and can be flexibly applied to various staplers or staplers. Suitable for promotional use.

Description of drawings

The above is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of the high-strength absorbable staple of the present invention.

FIG. 2 is a schematic cross-sectional structure diagram of FIG. 1 .

Fig. 3 is a schematic diagram of the nail body structure of the high-strength absorbable staple of the present invention.

Fig. 4 is a schematic diagram of the fastener structure of the high-strength absorbable staple of the present invention.

Fig. 5 is a schematic diagram of the double-convex structure of the nail body of the high-strength absorbable staple of the present invention.

Fig. 6 is a schematic diagram of the crescent-shaped structure of the high-strength absorbable staple of the present invention.

FIG. 7 is a schematic diagram of the combined structure of FIG. 6 .

Fig. 8 is a schematic structural view of the pusher block of the nail cartridge assembly of the present invention.

Fig. 9 is a schematic structural view of the integrated nail pushing block of the nail cartridge assembly of the present invention.

Fig. 10 is a schematic structural view of the combination of the pusher block and the staple body in Fig. 9 .

Fig. 11 is a schematic structural view of the combination of the pusher block, the staple body and the staple cartridge shown in Fig. 10 .

Fig. 12 is a schematic structural view of the nail anvil of the nail cartridge assembly of the present invention.

FIG. 13 is a schematic diagram of a partially enlarged structure at position I in FIG. 12 .

Fig. 14 is a schematic structural view of the combination of the anvil and the staple fastener shown in Fig. 13 .

Fig. 15 is a schematic structural view of a linear cutting stapler using the components shown in Fig. 11 and Fig. 14 .

Fig. 16 is a schematic structural view of the crescent-shaped pusher block of the nail cartridge assembly.

FIG. 17 is a schematic structural view of the combination of the pusher block and the staple body shown in FIG. 16 .

Fig. 18 is a schematic structural view of the combination of the pusher block, the staples and the staple cartridge shown in Fig. 17 .

Fig. 19 is a schematic structural view of the nail anvil corresponding to Fig. 18 .

Fig. 20 is a combined schematic view of the structures shown in Figs. 18 and 19 .

Fig. 21 is a schematic structural view of a tubular stapler using the components shown in Figs. 18 and 19 .

Detailed ways

Please refer to Figs. 1-7, the invented high-strength absorbable staple includes a staple body 1 and a fastener 2 made of absorbable material. Wherein, the nail body 1 includes a base 11 and more than two nail bodies 12 fixed on the same base 11, and an installation hole 13 penetrating through the nail body is provided along the axial direction of each nail body 12. The fastener 2 is provided with clamping holes 21 corresponding to the number and position of the nail body 12 , and is clamped with the top of the nail body 1 through the clamping holes 21 .

Preferably, the nail body 12 can adopt a cylindrical structure as shown in the figure, or a conical structure to facilitate penetration. The nail head of the nail body 1 is preferably conical, and the diameter of the bottom surface of the cone is slightly larger than the diameter of the nail body 12 and the fastener hole 21 , thereby forming the protrusion 14 . In addition, as shown in Figure 5, one more locking protrusion 14 can be provided under the nail head locking protrusion 14, and the two locking protrusions 14 respectively form a locking connection with the upper and lower sides of the fastener 2, and the connection structure is more firm and stable. .

In order to adapt to the requirements of flexible installation and being applicable to various staplers, the utility model's staple is preferably a U-shaped nail structure, that is, two nail bodies 12 are fixed on the same base 11, and the fastener 2 can be used with two The plate structure of the round hole, the shape of the nail body base 11 and the fastener 2 should be the same or corresponding. Usually, a rectangle with chamfered corners as shown in Figure 1-5 can be used for a linear cutting stapler. The crescent shape shown in Figures 6 and 7 can be adopted to be suitable for tubular staplers.

Please refer to FIGS. 8-21 , the staple cartridge assembly of the present invention includes a pusher block 3 , a nail abutment seat 4 , a staple cartridge 5 and the high-strength absorbable staples of the present invention.

Wherein, the pusher block 3 includes a main body 31 and a reinforcing pin 32 fixed on the main body. The setting position of the reinforcing pin 32 corresponds to the position of the staple body 1 and is inserted into the mounting hole 13 of the staple body. It is advisable for the pusher block 3 to be the same as or correspond to the shape of the staple body base 11 and the fastener 2, for example, a rectangle with chamfers as shown in Figure 8-11, or as shown in Figure 16-18 crescent shape. In addition, the pusher block 3 can be configured as a single structure as shown in FIG. 8 , or as an integrated structure as shown in FIGS. 9 and 11 . The reinforcing needle 32 is generally made of metal, and its length is slightly longer than the length of the mounting hole 13 of the staple body. Since the nail body 11 is a hollow structure, the end of the metal reinforcement needle 32 protrudes from the nail head of the staple, which can enhance the strength and pass through the tissue smoothly when suturing the tissue.

The pusher block 3 on which the staple body 1 is fixed can be slid up and down and installed in the staple cartridge 5 . For example, there is a cavity structure below the mounting hole of the nail bin 5, which is used to install the nail pushing block 3. The inner surface structure of the nail bin 5 cavity matches the surface structure of the nail pushing block 3, so that it can be moved up and down in the nail bin 5. slide.

The fastener 2 of the staple is installed on the nail abutment 4 . As shown in Figures 12-14, a cylindrical protrusion 41 can be provided on the nail anvil 4, and the protrusion 41 is elastically fixed to the nail anvil 4, and its setting position corresponds to the position of the fastener hole 21, and its diameter is equal to Or slightly smaller than the inner diameter of the fastening hole 21 . In addition, a circular groove 42 can also be provided on the corresponding position of the protrusion 41 on the nail anvil 4 , and the protrusion 41 is elastically fixed in the circular groove 42 through the structure of four elastic support beams 43 as shown in FIG. 13 .

The high-strength absorbable staple and its cartridge assembly of the present invention can be applied not only to the linear cutting stapler shown in Figure 15, but also to the tubular stapler shown in Figure 21, so that two Rows of pushing nail blocks and suturing nails are suitable, and the two rows of suturing nails are arranged in a staggered manner, and the projections on the nail abutting seat are also arranged alternately in a corresponding arrangement.

During installation, at first through staple nail body installation hole 13, staple nail body 1 is inserted on the reinforcement pin 32 of push nail block 3, fixes, and then whole fixation structure is installed in the staple bin 5, then fastener 2 is installed on the nail anvil 4, and is buckled and fixed by the protrusion 41 and the fastening hole 21 of the fastener 2.

When suturing tissue, the staple pushing block 3 moves upward with the push of the staple cartridge assembly under the external force, the staple body 1 slides forward together driven by the staple pushing block, and slides out of the staple cartridge 5, and the staple body 11 passes through the human tissue . Simultaneously, the conical nail head of the nail body 11 arrives in the clamping hole 21 of the fastener 2. Under the action of the thrust, the nail head acts on the cylindrical protrusion 41 located in the clamping hole 21, so that the fastener 2 breaks away from the protrusion. 41 and anvil 4. When the conical nail head passes through the fastener 2 completely, an interference fit and clamping are formed, and the nail body 1 and the fastener 2 are tightly closed to form a "mouth" structure. After the suturing is completed, the instrument is reset, and the metal reinforcing needle 32 withdraws from the staple body installation hole 13 together with the push nail block 3, and returns to the staple bin 5, and the staple is separated from the instrument along with the tissue and remains in the human body.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Those skilled in the art make some simple modifications, equivalent changes or modifications by using the technical content disclosed above, all of which fall within the scope of the present invention. within the scope of protection of the invention.

Claims (10)

1. a high strength can absorb suturing nail, comprises that employing can absorb the nail body and the securing member of material, is characterized in that:

Said nail body comprises that base follows closely body more than two with being fixed on the same base, and along axis direction of each nail body the installing hole that connects the nail body is set;

Said securing member is provided with and follows closely body quantity, the corresponding hole clipping in position, and through this hole clipping and the top clamping of nail body.

2. high strength according to claim 1 can absorb suturing nail, it is characterized in that described nail as cylinder or conical structure, and it is conical that its ailhead is, and conical bottom surface somewhat larger in diameter is in the diameter of nail body and securing member hole clipping, and it is protruding to form card.

3. high strength according to claim 1 can absorb suturing nail, it is characterized in that described suturing nail is the U sprig, on same base, is fixed with two nail bodies.

4. high strength according to claim 1 can absorb suturing nail, it is characterized in that described nail is provided with on one's body that up and down two cards are protruding, respectively with the above and below formation clamping of securing member.

5. a nail bin groupware is characterized in that comprising that each described high strength can absorb suturing nail among ejector pin piece, nail supporting base, nail bin and the claim 1-4, wherein:

The ejector pin piece comprises body and is fixed on the booster injection on the body that said booster injection inserts in the installing hole of said stitching ailing body;

The ejector pin piece that is fixed with stitching ailing body can slide up and down and is installed in the nail bin;

The securing member of said suturing nail is installed on the nail supporting base.

6. nail bin groupware according to claim 5 is characterized in that flexible fastening has cylindrical bump on the described nail supporting base, projection that the position is set is corresponding with the position of securing member hole clipping, diameter is equal to or slightly less than the hole clipping internal diameter of securing member.

7. nail bin groupware according to claim 6 is characterized in that described nail supporting base is provided with circular trough, and said projection is fixed in the circular trough through four elastic supporting beams.

8. nail bin groupware according to claim 5 is characterized in that being equipped with in the described nail bin two row's ejector pin piece and suturing nails, and two row's suturing nails are staggered.

9. high strength according to claim 5 can absorb suturing nail and nail bin groupware thereof, it is characterized in that described stitching ailing body base, securing member and ejector pin are block-shaped identical or corresponding, adopts the rectangle or the crescent of band chamfering.

10. nail bin groupware according to claim 5 is characterized in that described booster injection is a metal material, and its length is slightly larger than the length of sewing up ailing body installing hole.

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