Puncture Device With Protective Sleeve And Sheath Tube
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Solution Overview
Problem
Current puncture devices face challenges in maintaining a sterile environment during assembly, require high hand control strength for precise puncture, and often cause tissue damage due to excessive force, and the sheath tube's fixation methods can lead to incision damage.
Innovation Solution
A puncture device with a protective sleeve to isolate the puncture base, a disassembling/assembling assembly for quick and sterile connection, and a sheath tube with a thread and horizontal stripe structure to reduce friction and improve fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the puncture base and puncture assembly are assembled directly without protective isolation, then the assembly process is simple and quick, but the sterile environment for the puncture assembly is destroyed
Solution Approach 1:
The device is divided into separate functional modules: a reusable puncture base and disposable puncture assemblies. The protective sleeve is integrated with the puncture assembly rather than the base, allowing the base to remain sterile while the assembly is replaced. This segmentation enables the base to be isolated and protected while allowing easy replacement of the non-sterile assembly components.
Solution Approach 2:
The protective function is extracted and integrated into the puncture assembly rather than the puncture base. The protective sleeve is attached to the puncture assembly, which is then connected to the base through a sterile interface. This extraction allows the base to maintain its sterile environment while the protective function travels with the replaceable assembly.
2Productivity
If the puncture base is reused after disinfection, then medical cost is reduced, but the disinfection agent causes corrosion to the puncture base
Solution Approach 1:
The puncture assembly is designed as a disposable component that is discarded after a single use, eliminating the need to disinfect the puncture base. The protective sleeve is integrated with this disposable assembly, so the base never contacts non-sterile environments and requires no disinfection, avoiding corrosion while enabling reuse of the expensive base component.
Solution Approach 2:
A sterile interface or barrier is introduced between the reusable puncture base and the disposable puncture assembly. This intermediary allows the base to remain in a sterile state while the assembly is replaced, eliminating the need for disinfection of the base and preventing corrosion from disinfection agents.
3Strength
If the sheath tube has increased threads or surgical suture fixation, then the fixation strength is improved, but the damage to the incision is aggravated
Solution Approach 1:
The sheath tube surface is modified with localized thread structures and horizontal stripe patterns at specific regions rather than uniformly throughout. The threads are concentrated at the insertion end for anchoring, while horizontal stripes are placed at the fixation region to increase friction. This localized modification provides strong fixation without requiring excessive threading that would damage the incision.
Solution Approach 2:
The surface geometry of the sheath tube is changed by adding thread structures and horizontal stripe patterns. These geometric modifications increase the coefficient of friction between the sheath tube and surrounding tissue, providing strong fixation without requiring increased thread quantity or surgical sutures that would aggravate incision damage.
4Manufacturing precision
If the user exerts high hand control strength for precise puncture, then puncture precision is improved, but tissue injury and wound aggravation occur
Solution Approach 1:
The puncture device incorporates self-aligning features such as guide structures, positioning marks, and ergonomic design elements that automatically guide the puncture needle to the correct location and angle. This self-service functionality reduces the need for high manual control strength, allowing precise puncture with minimal user force and reducing tissue injury risk.
Data Source
AI summary
A puncture device (1), comprising: a puncture base (10), a protective sleeve (60), a disassembling/assembling assembly (50) and a puncture assembly (40). One end of the protective sleeve (60) is provided with a mounting hole (610); the protective sleeve (60) is sleeved on the puncture base (10); the disassembling/assembling assembly (50) is connected to the end of the protective sleeve (60) having the mounting hole (610); and a tip (43) of the puncture assembly (40) sequentially passes through the disassembling/assembling assembly (50) and the mounting hole (610) to be in driving connection with the puncture base (10). Also provided is a sheath tube, comprising: a sheath tube body (11) and a first thread structure (12) and a first horizontal stripe structure (13) provided on an outer wall of the sheath tube body (11). The first thread structure (12) is provided at a first end of the sheath tube body (11); the first horizontal stripe structure (13) is provided between the first thread structure (12) and a second end (14) of the sheath tube body (11) in an axial direction of the sheath tube body (11); and horizontal stripes of the first horizontal stripe structure (13) are patterns perpendicular to the axial direction of the sheath tube body (11). After the puncture device (1) is used, it is unnecessary to spend additional time disinfecting the puncture base (10) and then disassemble/assemble the puncture assembly (40), so that the corrosion effect possibly generated by a disinfection agent on the puncture base (10) is avoided, the service life of the puncture base (10) is prolonged, and damage to a sterile environment for the puncture assembly (40) is avoided while quick disassembling/assembling of the puncture base (10) and the puncture assembly (40) is achieved. By using the first thread structure (12) and the first horizontal stripe structure (13), a friction force with an incision tissue is increased, thereby improving the stability of fixing the sheath tube in an incision.