Surgical Docking Device Two-Part Adapter Pivot Registration
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Solution Overview
Problem
Existing surgical systems face challenges in precisely registering and maintaining the pivot point during surgical interventions, leading to potential tissue damage due to improper movement coordination of surgical instruments.
Innovation Solution
A docking device with a two-part adapter system that allows for precise alignment and connection of a surgical instrument with a holding arm of a surgical holding device, utilizing laser beams to define a predetermined intersection that corresponds to the pivot point, ensuring stable and controlled movement of the instrument.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the surgical instrument is clamped directly to the holding arm, then the connection is simple and direct, but significant movement of the instrument occurs during clamping which can cause damage to the body entry site
Solution Approach 1:
The adapter device is divided into two separate adapters: a first adapter that connects to the holding arm and a second adapter that connects to the surgical instrument. This segmentation allows the connection process to occur in two stages, enabling precise positioning before final connection, thereby avoiding tissue damage while maintaining connection simplicity.
Solution Approach 2:
The second adapter is pre-positioned on the surgical instrument shaft at a specific distance from the instrument's pivot point before connection to the holding arm. This preliminary positioning ensures that when the instrument is connected, the pivot point is correctly registered, preventing damage to the body entry site during the connection process.
2Productivity
If the pivot point is not precisely registered, then the connection process is faster, but the coordination of instrument movements around the pivot point becomes inaccurate leading to tissue stress
Solution Approach 1:
The second adapter is pre-positioned on the surgical instrument shaft at a predetermined distance from the instrument's pivot point before connection. This preliminary action ensures that when the adapter connects to the holding arm, the pivot point is automatically and precisely registered, eliminating the need for complex manual registration procedures while maintaining high accuracy.
Solution Approach 2:
The second adapter acts as an intermediary component between the surgical instrument and the holding arm. It includes a connecting body with an inclined terminal connection surface that facilitates precise alignment and registration of the pivot point during the connection process, ensuring both speed and accuracy.
3Measurement precision
If a complex registration procedure is used to precisely locate the pivot point, then the pivot point registration accuracy is improved, but the procedure becomes more complex and error-prone
Solution Approach 1:
The second adapter is pre-positioned on the surgical instrument shaft at a specific distance from the pivot point before connection to the holding arm. This preliminary positioning simplifies the overall registration procedure by eliminating the need for complex laser alignment or manual measurement procedures, while still achieving precise pivot point registration through the adapter's geometric design.
Solution Approach 2:
The adapter device performs self-alignment and self-registration through its geometric design. The inclined terminal connection surface of the connecting body automatically guides the alignment process, and the predetermined distance from the instrument shaft ensures correct pivot point registration without requiring external registration tools or complex procedures.
4Ease of operation
If the surgical instrument is moved significantly during clamping to the holding arm, then the connection can be established, but the body entry site experiences additional stress and potential damage
Solution Approach 1:
The second adapter is pre-positioned on the surgical instrument shaft before connection to the holding arm. This preliminary positioning ensures that the instrument is already at the correct location and orientation, allowing the connection to be made with minimal movement and thereby reducing stress on the tissue at the body entry site.
Solution Approach 2:
The two-part adapter device acts as a mediator that facilitates connection with minimal instrument movement. The first adapter connects to the holding arm while the second adapter, already positioned on the instrument, connects to the first adapter, enabling a gentle connection process that avoids significant instrument movement and tissue stress.
Data Source
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AI summary
The present invention provides a docking device (1), a surgical holding device with such a docking device (1), and a method for connecting a surgical instrument (2) to a holding arm of a surgical holding device in a docking situation using the docking device (1). The docking device (1) according to the invention has a two-part adapter device that can be connected at a proximal end to the holding arm and at a distal end to the surgical instrument (2), wherein a first adapter (5) is provided with an elongated section (5c) having a longitudinal axis (Z) and with a connecting body (8) located at a distal end (5b) of the first adapter (5), and which has a first engagement element with a terminal connecting surface (8').Furthermore, the adapter device comprises a second adapter (6) designed to be arranged on the shaft (2a) of the surgical instrument (2) and which has an engagement element (11) that, in the docking position, points towards and corresponds to the terminal connecting surface (8'). In the docking position, the connecting body (8) of the first adapter (5) forms a detachable connection with the corresponding engagement element (11) of the second adapter (6). The terminal connecting surface (8') of the first adapter (5) is inclined with respect to its longitudinal axis (Z) by a predetermined first angle (α), which lies in a range of 30° to 90°.