DE202015008201U1 - Surgical suture instrument for screwing single sutures - Google Patents

Abstract

The "surgical suturing instrument for screwing single sutures" is a two-part surgical suture instrument for double-stitched individual sutures with thread withdrawal of protectable configuration, characterized by two corresponding different active sites on the one hand in the atraumatic needle with partially spirally screwed tip and on the other hand in the straight thread gripper. The site of action in the spiral-like tip of the atraumatic needle is formed as a slightly oblique thread-guiding incision. The corresponding site of action of the tissue-perforating and thread-receiving needle-like thread gripper is designed as a catch hook. This outwardly directed catch picks up on the thread incision tightly presented thread and leads back this. These effective points "catch hook" and "incision" are shaped so that they always act at a constant shallow angle to each other.

Description

The "surgical suturing instrument for screwing single sutures" is a reusable surgical suturing instrument with suture retraction for double-threaded single sutures, which are screwed forward (ie antegrade). It is a medical instrumental invention for surgical / surgical sutures with an antero-directionally targeted screwing tissue puncture to position a double-lumen suture deeper engaging the tissue with any reasonably stable suture filament at the depth of a narrow surgical site.

The inventive step consists in the development of a solution which was previously unobvious for the experienced surgeon and which makes it possible to use tight double-stitched single sutures with suture withdrawal in deep, tight surgical sites by means of deep tissue penetration into the tissue with conventional surgical suture.

An embodiment will be explained with reference to the technical description and the figures.

Technical description -

"Suture instrument for screwing single sutures" on the basis of to

The "Surgical Suture Instrument for Screwing Single Sutures" consists of two parts that can be joined together
the atraumatic needle (AT) ( )
and from the thread-gripper (FG) ( ).

The instrument is characterized by two corresponding different active sites on the one hand in the atraumatic needle (AT) with partially spirally screwed tip and on the other hand in the straight thread grab (FG), in which the one site of the atraumatic needle as a slightly oblique filamentous incision (I) in the helically twisted tip (NS) of the atraumatic needle is formed and the other site of action is designed as a tissue-perforating and thread-taking needle-like thread-gripper (FG). This thread grabber (FG) picks up the thread (F) tautly presented via the thread incision (I) with an outwardly directed catch hook (H) and returns this suture thread (F). The catching point "catch hook" which picks up the thread and the point of action "incision" are shaped so that these points of action always act at a constant, flat angle to one another.

The guide eyelet (Ö) is used to guide the thread gripper (FG) when picking up a suture (F) in the longitudinal direction of the instrument. The thread gripper (FG) is secured against tilting by the folded rear portion (S), which is guided longitudinally in two superimposed longitudinal bores of the handle (G). In the suture, the helical suture tip (NS) of the mated actionable suture instrument (NS) ) entered the tissue atraumatically.

At the partially spirally screwed tip of the atraumatic needle (AT) is the incision (I) over which the suture thread (F) is stretched. This thread (F) is guided through the guide holes (B) and kept under tension by the surgeon until the thread (F) is picked up by the outwardly directed hook (H) of the thread-gripper (FG). This results in a deeply engaging partially spirally alinear thread pattern in the antegrade stitch channel, which ensures a secure hold of the seam. With the catch hook (H) of the vertically inserted thread gripper (FG), the thread incision (I) of the helical seam tip (NS) of the atraumatic needle (AT) grips the suture thread (F) and returns it in double curvature. In this case, the thread (F) slides through the guide holes (B) ( ).

: Part "Atraumatic Needle" (AT) of the screwing single suture with thread incision (I) at the helical suture tip (NS). The handle is used for handling (G)

: Part "thread gripper" (FG) of the suture with guide eyelet (Ö); for picking up and retraction of the suture (F) from the thread incision (I) of the atraumatic needle (AT) of the fishing hook (H) acts.

: Actionable suture instrument consisting of the parts "Atraumatic Needle" (AT) with its helical suture tip (NS) as well as the "Fadengreifer" FG. The guide eyelet (Ö) is used to guide the thread gripper (FG) when picking up a suture F. The thread gripper (FG) is secured against tilting by the folded rear portion (S), this includes the handle (G) two conductive superimposed longitudinal bores.

Scheme of the operating principle of picking and withdrawal of the thread (F) with the catch hook (H) of the thread gripper (FG) from the thread incision (I) of the helical seam tip (NS) of the atraumatic needle (AT), the suture thread (F) slides through the guide holes (B).

LIST OF REFERENCE NUMBERS

• AT

  Atraumatic needle

  G

  Grip of the Atraumatic Needle

  NS

  Helical seam tip

  B

  Guide holes of the suture thread

  I

  Fadeninzision

  FG

  thread gripper

  H

  hook

  Ö

  guide eye

  S

  folded portion of the thread grab

  F

  suture

Achieved use value properties

With the invention "surgical suture instrument for screwing individual sutures" is achieved that in the depth of a narrow surgical area - for example, in general surgical, urological or gynecological operations - a "blind" exact positioning of the seam (ie only by pressing) without long-term cutting production of Accessibility is uncomplicated. This procedure enables the "thread template technique".

• a) In der Tiefe des Operationsgebietes (zum Beispiel bei abdominalchirurgischen, urologischen oder gynäkologischen Operationen) ist ein „blindes” exaktes Positionieren der in Aktionsrichtung gewebeumgreifend vorwärts gerichteten einschraubenden Naht (also lediglich durch Tasten) mittels dieses Nahtinstrumentes unkompliziert möglich.
• b) Die Nahtsetzung mit dem Nahtinstrument- also eingedrehter Einstich in das Gewebe mit nachfolgendem geradem Fadenrückzug – erfolgt in einem Arbeitsgang, ohne daß ein Umgreifen erforderlich wird.
• c) Auch in weniger rigiden Geweben ist mittels dieses Nahtinstrumentes eine in Aktionsrichtung einschraubend gewebeumgreifende vorwärts gerichtete belastbare Naht zu setzen.
• d) Als Nahtmaterial ist beliebiges chirurgisches Nahtmaterial angemessener Stabilität verwendbar, wobei keine besondere Ansprüche an Fadenstärke, Fadenstruktur, Rigidität, Oberflächenstruktur oder an besondere Konfektionierung bestehen.
• e) Wegen sehr einfacher Fadeneinlage in das Instrument ist die rasche Fortfolge weiterer Nähte in gleicher Operationssitzung gesichert.
• f) Das Nahtinstrumentit ein aus zwei Teilen bestehendes robustes Instrument mit zwei charakterisierenden unterschiedlichen korrespondierenden Wirkstellen der beiden Instrumententeile; es ist sicher handhabbar und bedarf keiner Justierung oder speziellen Montage.
• g) Die Wiederverwendbarkeit des Instrumentes ist nach Reinigung, Desinfektion und Sterilisierung des aus stabilem gehärtetem inoxidablem Instrumentenstahl gefertigten Nahtinstrumentes wegen seiner einfachen Konfiguration garantiert.

The novelty value of the instrument is based on utility value properties, which in the current state of the art of existing surgical suturing devices for single sutures are not coherent:

• a) In the depth of the surgical field (for example, in abdominal surgery, urological or gynecological operations) is a "blind" exact positioning of the tissue in the direction of the tissue extending forward screwing seam (ie only by pressing) by means of this suture instrument uncomplicated.
• b) The suturing with the Nähinstrument- so screwed puncture into the tissue with subsequent straight thread withdrawal - takes place in one operation, without encircling is required.
• c) Even in less rigid tissues, this suture instrument can be used to set a forward-facing load-bearing suture screwing into the direction of action.
• d) Any surgical suture of adequate stability can be used as the suture, with no special demands on thread strength, thread structure, rigidity, surface structure or special finishing.
• e) Because of the very simple thread insertion into the instrument, the rapid progression of further sutures is secured in the same operating session.
• f) The suture with a two-part robust instrument with two characterizing different corresponding active sites of the two parts of the instrument; It is safe to handle and requires no adjustment or special installation.
• g) The reusability of the instrument is guaranteed after cleaning, disinfecting and sterilizing the suture made of sturdy hardened stainless steel instrument steel because of its simple configuration.

State of Suture Technique

The current state-of-the-art in instrument technology makes robust suturing instruments for single sutures with suture withdrawal without the need for special pre-fabricated consumables that allow for a shallower antegrade screw insertion direction and then a straight double suture return, not available.

However, it is necessary for very heavy-duty wound closures (such as in square abdominal sutures), for securing alloplastic implants in deep surgical areas or for locking displaced organs to fascia or ligaments (such as in plastic or Descensus surgery in the female pelvis) or fixed to the individual Seams in the narrow depth for open operations apply expansive flatter seams. In surgical practice, forward single sutures are set with the objective of a flatter tissue puncture directed laterally to the axis of the instrument such that a suture with a curved needle is pierced through the tissue laterally to the longitudinal axis of the needle holder by a needle holder. After grasping the needle is pulled with the needle holder on the opposite side of the puncture, finally, the thread is knotted.

Available suture instruments do not serve this purpose of flatter antegrade connective threading suture.

For example, boomerang needle holders (1), in which a movable needle catches the prepared thread on the opposite side after puncturing, are special mechanically complex instruments which can be handled with great difficulty for smaller individual sutures. Likewise, there are demanding hand-held needle holder with rotating head (2), with a special thread is guided through the tissue and taken each other. In the meantime, a surgical suture forceps for single- and double-lumen sutures has also become practicable in rigid tissues, which allows a thread-pulling forceps-like lateral to the longitudinal axis (3). Also, an instrument for stable antegrade sutures inserted vertically deep into the tissue was evaluated (4).

The industrial applicability of the invention

"Surgical Suturing Device for Screwing Single Sutures" is based on the deductible business advantage for Surgical Operators, particularly from the extended indication of special surgical techniques involving a tissue-preserving antegrade suture in the depths of the surgical site. Significant cost reductions result mainly from shortening cut-to-seam times, reducing consumable costs - such as eliminating pre-packaged needle-thread sets or special tissue depth adjuvant applicators - reducing nap times due to reduced surgical burden, and hence the risk minimization. Thus, when using the suture instrument results in a better price-performance ratio for special abdominal surgical, urological or gynecological surgical surgical services.

Sites:

• 1. Logie N: Two modifications of the boomerang needle and holder. Br J Urol. 1948 Sep; 20 (3): 127 ,
• Second Goldberg RP: Capio ™ CL (Transvaginal Suture Capturing Device). Boston Scientific Corporation. 2007. Ordering Information 1.888.272.1001. Www.bostonscientific.com/gynecology
• 3. Neymeyer J .: Suture forceps. German Patent and Trademark Office; Utility Model No. 20 2009 010 029.4
• 4th Neymeyer J .: Surgical suture instrument for antegrade doubled single sutures with suture withdrawal. German Patent and Trademark Office; Submitted December 2015

Illustrations and legends

Surgical suture instrument for screwing single sutures

: Part "Atraumatic Needle" (AT) of the screwing single suture with thread incision (I) at the helical suture tip (NS).
The handle is used for handling (G)

: Part "thread gripper" (FG) of the suture with guide eyelet (Ö); for picking up and retracting the suture (F) from the thread incision (I) of the atraumatic needle AT the catch hook H acts

: Actionable suture instrument consisting of the parts "Atraumatic Needle" (AT) with its helical suture tip (NS) as well as the "Fadengreifer" (FG).
The guide eye (Ö) serves to guide the thread gripper (FG) when picking up a suture (F). The thread gripper (FG) is secured against tilting by the folded rear portion (S), this includes the handle (G) two conductive superimposed longitudinal bores.

: Working principle of gripping and retraction of the thread (F) with the catch hook (H) of the thread gripper (FG) from the thread incision (I) of the helical seam tip (NS) of the atraumatic needle (AT), the suture thread (F) slides through the two Guide holes (B).

LIST OF REFERENCE NUMBERS

• AT

  Atraumatic needle

  F

  Grip of the Atraumatic Needle

  NS

  Helical seam tip

  B

  Guide holes of the suture thread

  I

  Fadeninzision

  FG

  thread gripper

  H

  hook

  Ö

  guide eye

  S

  folded portion of the thread grab

  F

  suture

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202009010029 U [0020]

Cited non-patent literature

• Logie N: Two modifications of the boomerang needle and holder. Br J Urol. 1948 Sep; 20 (3): 127 [0020]
• Goldberg RP: Capio ™ CL (Transvaginal Suture Capturing Device). Boston Scientific Corporation. 2007. Ordering Information 1.888.272.1001. Www.bostonscientific.com/gynecology [0020]
• Neymeyer J .: Surgical suture instrument for antegrade doubled single sutures with suture withdrawal. German Patent and Trademark Office; Submitted December 2015 [0020]

Claims (4)

The "surgical suturing instrument for screwing single sutures" is a two-part surgical suture instrument for double-stitched individual sutures with thread withdrawal of protectable configuration, characterized by two corresponding different active sites on the one hand in the atraumatic needle with partially spirally screwed tip and on the other hand in the straight thread gripper. The site of action in the spiral-like tip of the atraumatic needle is formed as a slightly oblique thread-guiding incision. The corresponding site of action of the tissue-perforating and thread-receiving needle-like thread gripper is designed as a catch hook. This outwardly directed catch picks up on the thread incision tightly presented thread and leads back this. These effective points "catch hook" and "incision" are shaped so that they always act at a constant shallow angle to each other. According to claim 1 is the protected characteristic of the invention "surgical suturing instrument for screwing single sutures" the partially spirally screwed tip of the atraumatic needle, which is placed in the direction of action across the tissue a forward sweeping screwing seam. From the incision at this point, the suture thread stretched over this incision is picked up with the catch hook of the needle-shaped straight thread-wrench and returned with just double lobes. Exactly in the axis of the partial spiral of the atraumatic needle - according to claim 2 - the needle-like straight thread gripper is pierced for thread detection in the tissue. The then in the opposite direction just taking place retrograde doubled thread passage allows the "thread template technique". The characteristic of the Surgical Suturing Instrument for Threading Single Sutures is the precise "blind" positioning (ie, merely by pressing) of a flat, sweeping, screwing suture in the direction of action, without extensive intersecting accessibility in the narrow depths of an operative area such as For example, in abdominal surgery, urological or gynecological operations.

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