Hannum Graspers
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The Hannum Grasper is an orthopedic surgical grasping instrument designed to firmly hold bone and soft tissue during procedures requiring controlled dissection, manipulation, and tissue removal. Its toothed jaw provides secure engagement with the working structure, while the non-locking design allows the user to maintain a direct grip and apply controlled pressure as needed.
The instrument is available in three jaw configurations—short, medium, and long. The short and medium jaw configurations are intended for holding bone, while the long jaw configuration is designed for tissue handling.
With a 9.25" (23.5 cm) overall length and a relatively long, low-profile design, Hannum Graspers can provide useful access during procedures performed through smaller surgical incisions.
Key Features
- Toothed jaws designed to firmly hold bone and tissue
- Non-locking design for direct manual control
- Allows controlled pressure during grasping
- Available in short, medium, and long jaw configurations
- Short and medium jaws designed for holding bone
- Long jaw designed for tissue handling
- 9.25" (23.5 cm) overall length across all configurations
- Low-profile design intended to facilitate work through smaller incisions
- Suitable for dissection and controlled tissue manipulation
- Designed for orthopedic and hip-related surgical applications
Design and Configuration
The Hannum Grasper uses a non-locking handle mechanism, allowing the instrument to be easily gripped and manually controlled. Unlike a locking grasping instrument, the user can continuously regulate the amount of pressure applied through the handles.
The toothed working end is designed to engage the tissue or bone securely. Three jaw configurations are available, providing different working-end characteristics for specific surgical requirements.
Short Jaw
The Short Jaw configuration is designed for holding bone and features a 5 mm jaw width. It has an overall length of 9.25" (23.5 cm).
Medium Jaw
The Medium Jaw configuration is also designed for holding bone and features a 5 mm jaw width. It has the same 9.25" (23.5 cm) overall length.
Long Jaw
The Long Jaw configuration is intended for holding and manipulating tissue. It features a 3 mm jaw width and a 9.25" (23.5 cm) overall length.
Working-End Characteristics
The jaws incorporate teeth designed to provide a firm grip on the selected structure. This tooth pattern helps maintain engagement while the user manipulates bone or tissue.
The three configurations provide different working-end characteristics:
| Jaw Configuration | Intended Use | Jaw Width | Overall Length |
|---|---|---|---|
| Short Jaw | Bone holding | 5 mm | 9.25" (23.5 cm) |
| Medium Jaw | Bone holding | 5 mm | 9.25" (23.5 cm) |
| Long Jaw | Tissue handling | 3 mm | 9.25" (23.5 cm) |
Non-Locking Design
A key characteristic of the Hannum Grasper is its non-locking design. The handles can be manually gripped while allowing the user to regulate pressure directly.
This design provides tactile control during grasping and manipulation, which can be useful when the amount of applied pressure needs to be adjusted during dissection or tissue handling.
Orthopedic and Hip Surgery Applications
Hannum Graspers are designed for use in orthopedic procedures involving the hip and surrounding structures. The instrument may assist with dissection and removal of the anterior capsule, labrum, and other soft tissue around the acetabulum.
The instrument can also be used to help release the capsule and expose the femur during preparation for placement of a femoral stem.
Its extended, low-profile design can facilitate work through a smaller incision while helping maintain visibility of the operative area.
Anterior Hip Applications
The grasper may be used during anterior hip procedures where controlled handling of the capsule, labrum, and surrounding soft tissue is required.
Potential uses include:
- Dissection of the anterior capsule
- Removal of the anterior capsule
- Removal of the labrum
- Removal or manipulation of soft tissue around the acetabulum
- Releasing the capsule to expose the femur
- Assisting with femoral exposure during preparation for femoral stem placement
The appropriate jaw configuration should be selected according to the tissue or bone being handled and the requirements of the surgical approach.
Low-Profile Design
The long, low-profile design is intended to facilitate working through a small surgical incision. This can be useful in procedures where maintaining visualization of the operative field while manipulating tissue is important.
The elongated profile provides reach while keeping the working end positioned within the operative area.
Jaw Selection Guide
The three configurations provide different options for surgical handling:
Short Jaw — 5 mm
Designed for holding bone with a shorter working jaw.
Medium Jaw — 5 mm
Designed for holding bone with a medium-length jaw configuration.
Long Jaw — 3 mm
Designed primarily for tissue handling with a longer jaw configuration and narrower specified jaw width.
Technical Specifications
| Specification | Short Jaw | Medium Jaw | Long Jaw |
|---|---|---|---|
| Instrument Type | Hannum Grasper | Hannum Grasper | Hannum Grasper |
| Jaw Configuration | Short | Medium | Long |
| Intended Handling | Bone | Bone | Tissue |
| Jaw Width | 5 mm | 5 mm | 3 mm |
| Overall Length | 9.25" (23.5 cm) | 9.25" (23.5 cm) | 9.25" (23.5 cm) |
| Handle Design | Non-locking | Non-locking | Non-locking |
| Working End | Toothed Jaw | Toothed Jaw | Toothed Jaw |
Handling and Use Considerations
The non-locking mechanism allows the user to control grasping pressure manually. Appropriate pressure should be applied according to the structure being handled and the requirements of the surgical technique.
Before use, inspect the jaws, teeth, handle mechanism, and overall instrument condition. After use, follow the healthcare facility's established procedures for cleaning, inspection, sterilization, maintenance, and storage.
Product Configuration
This product is best listed as a Variable Product because the customer can select between three distinct jaw configurations:
- Short Jaw — 5 mm
- Medium Jaw — 5 mm
- Long Jaw — 3 mm
All three configurations have a 9.25" (23.5 cm) overall length.
FAQs
What are Hannum Graspers used for?
Hannum Graspers are designed to help firmly grasp and hold bone and soft tissue during orthopedic procedures.
What type of handle design do Hannum Graspers have?
They feature a non-locking design, allowing the user to manually control the grip and applied pressure.
How many jaw configurations are available?
There are three configurations: Short Jaw, Medium Jaw, and Long Jaw.
Which jaws are designed for bone?
The Short Jaw and Medium Jaw configurations are designed for holding bone.
Which jaw is designed for tissue?
The Long Jaw configuration is designed for tissue handling.
What is the jaw width of the Short Jaw?
The Short Jaw has a specified 5 mm jaw width.
What is the jaw width of the Medium Jaw?
The Medium Jaw has a specified 5 mm jaw width.
What is the jaw width of the Long Jaw?
The Long Jaw has a specified 3 mm jaw width.
What is the overall length?
All three configurations have an overall length of 9.25" (23.5 cm).
Can Hannum Graspers be used during anterior hip procedures?
They are designed to assist with procedures involving the anterior capsule, labrum, and soft tissue around the acetabulum, including applications where the capsule is released to expose the femur.
Why is the grasper's low-profile design useful?
The long, low-profile design is intended to facilitate working through a smaller incision while helping maintain visibility of the operative field.